diff --git a/eng/targets/Settings.props b/eng/targets/Settings.props
index 9ae3cb7f061eb..ebcb509fa014a 100644
--- a/eng/targets/Settings.props
+++ b/eng/targets/Settings.props
@@ -208,8 +208,7 @@
                       and hence suppress this warning until we get closer to release and a more
                       thorough documentation story
         -->
-        <!-- PROTOTYPE(list-patterns) PublicAPIs -->
-        <NoWarn>$(NoWarn);1573;1591;1701;RS0016</NoWarn>
+        <NoWarn>$(NoWarn);1573;1591;1701</NoWarn>
       </PropertyGroup>
       <PropertyGroup>
         <DefineConstants Condition="'$(InitialDefineConstants)' != ''">$(DefineConstants);$(InitialDefineConstants)</DefineConstants>
diff --git a/src/Compilers/CSharp/Portable/PublicAPI.Unshipped.txt b/src/Compilers/CSharp/Portable/PublicAPI.Unshipped.txt
index 870efc1140178..c263b45f18fd5 100644
--- a/src/Compilers/CSharp/Portable/PublicAPI.Unshipped.txt
+++ b/src/Compilers/CSharp/Portable/PublicAPI.Unshipped.txt
@@ -24,6 +24,27 @@ Microsoft.CodeAnalysis.CSharp.Syntax.LineDirectivePositionSyntax.WithCommaToken(
 Microsoft.CodeAnalysis.CSharp.Syntax.LineDirectivePositionSyntax.WithLine(Microsoft.CodeAnalysis.SyntaxToken line) -> Microsoft.CodeAnalysis.CSharp.Syntax.LineDirectivePositionSyntax
 Microsoft.CodeAnalysis.CSharp.Syntax.LineDirectivePositionSyntax.WithOpenParenToken(Microsoft.CodeAnalysis.SyntaxToken openParenToken) -> Microsoft.CodeAnalysis.CSharp.Syntax.LineDirectivePositionSyntax
 *REMOVED*Microsoft.CodeAnalysis.CSharp.Syntax.LineDirectiveTriviaSyntax.File.get -> Microsoft.CodeAnalysis.SyntaxToken
+Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax
+Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax.AddPatterns(params Microsoft.CodeAnalysis.CSharp.Syntax.PatternSyntax[] items) -> Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax
+Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax.CloseBracketToken.get -> Microsoft.CodeAnalysis.SyntaxToken
+Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax.Designation.get -> Microsoft.CodeAnalysis.CSharp.Syntax.VariableDesignationSyntax
+Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax.OpenBracketToken.get -> Microsoft.CodeAnalysis.SyntaxToken
+Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax.Patterns.get -> Microsoft.CodeAnalysis.SeparatedSyntaxList<Microsoft.CodeAnalysis.CSharp.Syntax.PatternSyntax>
+Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax.Update(Microsoft.CodeAnalysis.SyntaxToken openBracketToken, Microsoft.CodeAnalysis.SeparatedSyntaxList<Microsoft.CodeAnalysis.CSharp.Syntax.PatternSyntax> patterns, Microsoft.CodeAnalysis.SyntaxToken closeBracketToken, Microsoft.CodeAnalysis.CSharp.Syntax.VariableDesignationSyntax designation) -> Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax
+Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax.WithCloseBracketToken(Microsoft.CodeAnalysis.SyntaxToken closeBracketToken) -> Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax
+Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax.WithDesignation(Microsoft.CodeAnalysis.CSharp.Syntax.VariableDesignationSyntax designation) -> Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax
+Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax.WithOpenBracketToken(Microsoft.CodeAnalysis.SyntaxToken openBracketToken) -> Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax
+Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax.WithPatterns(Microsoft.CodeAnalysis.SeparatedSyntaxList<Microsoft.CodeAnalysis.CSharp.Syntax.PatternSyntax> patterns) -> Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax
+Microsoft.CodeAnalysis.CSharp.Syntax.SlicePatternSyntax
+Microsoft.CodeAnalysis.CSharp.Syntax.SlicePatternSyntax.DotDotToken.get -> Microsoft.CodeAnalysis.SyntaxToken
+Microsoft.CodeAnalysis.CSharp.Syntax.SlicePatternSyntax.Pattern.get -> Microsoft.CodeAnalysis.CSharp.Syntax.PatternSyntax
+Microsoft.CodeAnalysis.CSharp.Syntax.SlicePatternSyntax.Update(Microsoft.CodeAnalysis.SyntaxToken dotDotToken, Microsoft.CodeAnalysis.CSharp.Syntax.PatternSyntax pattern) -> Microsoft.CodeAnalysis.CSharp.Syntax.SlicePatternSyntax
+Microsoft.CodeAnalysis.CSharp.Syntax.SlicePatternSyntax.WithDotDotToken(Microsoft.CodeAnalysis.SyntaxToken dotDotToken) -> Microsoft.CodeAnalysis.CSharp.Syntax.SlicePatternSyntax
+Microsoft.CodeAnalysis.CSharp.Syntax.SlicePatternSyntax.WithPattern(Microsoft.CodeAnalysis.CSharp.Syntax.PatternSyntax pattern) -> Microsoft.CodeAnalysis.CSharp.Syntax.SlicePatternSyntax
+Microsoft.CodeAnalysis.CSharp.SyntaxKind.ListPattern = 9035 -> Microsoft.CodeAnalysis.CSharp.SyntaxKind
+Microsoft.CodeAnalysis.CSharp.SyntaxKind.SlicePattern = 9034 -> Microsoft.CodeAnalysis.CSharp.SyntaxKind
+override Microsoft.CodeAnalysis.CSharp.CSharpSyntaxRewriter.VisitListPattern(Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax node) -> Microsoft.CodeAnalysis.SyntaxNode
+override Microsoft.CodeAnalysis.CSharp.CSharpSyntaxRewriter.VisitSlicePattern(Microsoft.CodeAnalysis.CSharp.Syntax.SlicePatternSyntax node) -> Microsoft.CodeAnalysis.SyntaxNode
 override Microsoft.CodeAnalysis.CSharp.Syntax.LineDirectiveTriviaSyntax.File.get -> Microsoft.CodeAnalysis.SyntaxToken
 *REMOVED*Microsoft.CodeAnalysis.CSharp.Syntax.LineDirectiveTriviaSyntax.LineKeyword.get -> Microsoft.CodeAnalysis.SyntaxToken
 override Microsoft.CodeAnalysis.CSharp.Syntax.LineDirectiveTriviaSyntax.LineKeyword.get -> Microsoft.CodeAnalysis.SyntaxToken
@@ -94,6 +115,8 @@ abstract Microsoft.CodeAnalysis.CSharp.Syntax.BaseNamespaceDeclarationSyntax.Nam
 abstract Microsoft.CodeAnalysis.CSharp.Syntax.BaseNamespaceDeclarationSyntax.NamespaceKeyword.get -> Microsoft.CodeAnalysis.SyntaxToken
 abstract Microsoft.CodeAnalysis.CSharp.Syntax.BaseNamespaceDeclarationSyntax.Usings.get -> Microsoft.CodeAnalysis.SyntaxList<Microsoft.CodeAnalysis.CSharp.Syntax.UsingDirectiveSyntax>
 override Microsoft.CodeAnalysis.CSharp.CSharpSyntaxRewriter.VisitFileScopedNamespaceDeclaration(Microsoft.CodeAnalysis.CSharp.Syntax.FileScopedNamespaceDeclarationSyntax node) -> Microsoft.CodeAnalysis.SyntaxNode
+override Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax.Accept(Microsoft.CodeAnalysis.CSharp.CSharpSyntaxVisitor visitor) -> void
+override Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax.Accept<TResult>(Microsoft.CodeAnalysis.CSharp.CSharpSyntaxVisitor<TResult> visitor) -> TResult
 override Microsoft.CodeAnalysis.CSharp.Syntax.NamespaceDeclarationSyntax.Externs.get -> Microsoft.CodeAnalysis.SyntaxList<Microsoft.CodeAnalysis.CSharp.Syntax.ExternAliasDirectiveSyntax>
 override Microsoft.CodeAnalysis.CSharp.Syntax.NamespaceDeclarationSyntax.Members.get -> Microsoft.CodeAnalysis.SyntaxList<Microsoft.CodeAnalysis.CSharp.Syntax.MemberDeclarationSyntax>
 override Microsoft.CodeAnalysis.CSharp.Syntax.NamespaceDeclarationSyntax.Name.get -> Microsoft.CodeAnalysis.CSharp.Syntax.NameSyntax
@@ -108,11 +131,20 @@ override Microsoft.CodeAnalysis.CSharp.Syntax.FileScopedNamespaceDeclarationSynt
 override Microsoft.CodeAnalysis.CSharp.Syntax.FileScopedNamespaceDeclarationSyntax.Name.get -> Microsoft.CodeAnalysis.CSharp.Syntax.NameSyntax
 override Microsoft.CodeAnalysis.CSharp.Syntax.FileScopedNamespaceDeclarationSyntax.NamespaceKeyword.get -> Microsoft.CodeAnalysis.SyntaxToken
 override Microsoft.CodeAnalysis.CSharp.Syntax.FileScopedNamespaceDeclarationSyntax.Usings.get -> Microsoft.CodeAnalysis.SyntaxList<Microsoft.CodeAnalysis.CSharp.Syntax.UsingDirectiveSyntax>
+override Microsoft.CodeAnalysis.CSharp.Syntax.SlicePatternSyntax.Accept(Microsoft.CodeAnalysis.CSharp.CSharpSyntaxVisitor visitor) -> void
+override Microsoft.CodeAnalysis.CSharp.Syntax.SlicePatternSyntax.Accept<TResult>(Microsoft.CodeAnalysis.CSharp.CSharpSyntaxVisitor<TResult> visitor) -> TResult
 static Microsoft.CodeAnalysis.CSharp.CSharpExtensions.GetDeclaredSymbol(this Microsoft.CodeAnalysis.SemanticModel semanticModel, Microsoft.CodeAnalysis.CSharp.Syntax.FileScopedNamespaceDeclarationSyntax declarationSyntax, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) -> Microsoft.CodeAnalysis.INamespaceSymbol
 static Microsoft.CodeAnalysis.CSharp.SyntaxFactory.FileScopedNamespaceDeclaration(Microsoft.CodeAnalysis.CSharp.Syntax.NameSyntax name) -> Microsoft.CodeAnalysis.CSharp.Syntax.FileScopedNamespaceDeclarationSyntax
 static Microsoft.CodeAnalysis.CSharp.SyntaxFactory.FileScopedNamespaceDeclaration(Microsoft.CodeAnalysis.SyntaxList<Microsoft.CodeAnalysis.CSharp.Syntax.AttributeListSyntax> attributeLists, Microsoft.CodeAnalysis.SyntaxTokenList modifiers, Microsoft.CodeAnalysis.CSharp.Syntax.NameSyntax name, Microsoft.CodeAnalysis.SyntaxList<Microsoft.CodeAnalysis.CSharp.Syntax.ExternAliasDirectiveSyntax> externs, Microsoft.CodeAnalysis.SyntaxList<Microsoft.CodeAnalysis.CSharp.Syntax.UsingDirectiveSyntax> usings, Microsoft.CodeAnalysis.SyntaxList<Microsoft.CodeAnalysis.CSharp.Syntax.MemberDeclarationSyntax> members) -> Microsoft.CodeAnalysis.CSharp.Syntax.FileScopedNamespaceDeclarationSyntax
 static Microsoft.CodeAnalysis.CSharp.SyntaxFactory.FileScopedNamespaceDeclaration(Microsoft.CodeAnalysis.SyntaxList<Microsoft.CodeAnalysis.CSharp.Syntax.AttributeListSyntax> attributeLists, Microsoft.CodeAnalysis.SyntaxTokenList modifiers, Microsoft.CodeAnalysis.SyntaxToken namespaceKeyword, Microsoft.CodeAnalysis.CSharp.Syntax.NameSyntax name, Microsoft.CodeAnalysis.SyntaxToken semicolonToken, Microsoft.CodeAnalysis.SyntaxList<Microsoft.CodeAnalysis.CSharp.Syntax.ExternAliasDirectiveSyntax> externs, Microsoft.CodeAnalysis.SyntaxList<Microsoft.CodeAnalysis.CSharp.Syntax.UsingDirectiveSyntax> usings, Microsoft.CodeAnalysis.SyntaxList<Microsoft.CodeAnalysis.CSharp.Syntax.MemberDeclarationSyntax> members) -> Microsoft.CodeAnalysis.CSharp.Syntax.FileScopedNamespaceDeclarationSyntax
+static Microsoft.CodeAnalysis.CSharp.SyntaxFactory.ListPattern(Microsoft.CodeAnalysis.SeparatedSyntaxList<Microsoft.CodeAnalysis.CSharp.Syntax.PatternSyntax> patterns = default(Microsoft.CodeAnalysis.SeparatedSyntaxList<Microsoft.CodeAnalysis.CSharp.Syntax.PatternSyntax>)) -> Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax
+static Microsoft.CodeAnalysis.CSharp.SyntaxFactory.ListPattern(Microsoft.CodeAnalysis.SeparatedSyntaxList<Microsoft.CodeAnalysis.CSharp.Syntax.PatternSyntax> patterns, Microsoft.CodeAnalysis.CSharp.Syntax.VariableDesignationSyntax designation) -> Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax
+static Microsoft.CodeAnalysis.CSharp.SyntaxFactory.ListPattern(Microsoft.CodeAnalysis.SyntaxToken openBracketToken, Microsoft.CodeAnalysis.SeparatedSyntaxList<Microsoft.CodeAnalysis.CSharp.Syntax.PatternSyntax> patterns, Microsoft.CodeAnalysis.SyntaxToken closeBracketToken, Microsoft.CodeAnalysis.CSharp.Syntax.VariableDesignationSyntax designation) -> Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax
+static Microsoft.CodeAnalysis.CSharp.SyntaxFactory.SlicePattern(Microsoft.CodeAnalysis.CSharp.Syntax.PatternSyntax pattern = null) -> Microsoft.CodeAnalysis.CSharp.Syntax.SlicePatternSyntax
+static Microsoft.CodeAnalysis.CSharp.SyntaxFactory.SlicePattern(Microsoft.CodeAnalysis.SyntaxToken dotDotToken, Microsoft.CodeAnalysis.CSharp.Syntax.PatternSyntax pattern) -> Microsoft.CodeAnalysis.CSharp.Syntax.SlicePatternSyntax
 virtual Microsoft.CodeAnalysis.CSharp.CSharpSyntaxVisitor.VisitFileScopedNamespaceDeclaration(Microsoft.CodeAnalysis.CSharp.Syntax.FileScopedNamespaceDeclarationSyntax node) -> void
+virtual Microsoft.CodeAnalysis.CSharp.CSharpSyntaxVisitor.VisitListPattern(Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax node) -> void
+virtual Microsoft.CodeAnalysis.CSharp.CSharpSyntaxVisitor.VisitSlicePattern(Microsoft.CodeAnalysis.CSharp.Syntax.SlicePatternSyntax node) -> void
 virtual Microsoft.CodeAnalysis.CSharp.CSharpSyntaxVisitor<TResult>.VisitFileScopedNamespaceDeclaration(Microsoft.CodeAnalysis.CSharp.Syntax.FileScopedNamespaceDeclarationSyntax node) -> TResult
 Microsoft.CodeAnalysis.CSharp.SyntaxKind.RecordStructDeclaration = 9068 -> Microsoft.CodeAnalysis.CSharp.SyntaxKind
 override Microsoft.CodeAnalysis.CSharp.CSharpCompilation.GetUsedAssemblyReferences(System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) -> System.Collections.Immutable.ImmutableArray<Microsoft.CodeAnalysis.MetadataReference>
@@ -194,3 +226,5 @@ Microsoft.CodeAnalysis.CSharp.Syntax.ConversionOperatorDeclarationSyntax.Explici
 Microsoft.CodeAnalysis.CSharp.Syntax.ConversionOperatorDeclarationSyntax.Update(Microsoft.CodeAnalysis.SyntaxList<Microsoft.CodeAnalysis.CSharp.Syntax.AttributeListSyntax> attributeLists, Microsoft.CodeAnalysis.SyntaxTokenList modifiers, Microsoft.CodeAnalysis.SyntaxToken implicitOrExplicitKeyword, Microsoft.CodeAnalysis.CSharp.Syntax.ExplicitInterfaceSpecifierSyntax explicitInterfaceSpecifier, Microsoft.CodeAnalysis.SyntaxToken operatorKeyword, Microsoft.CodeAnalysis.CSharp.Syntax.TypeSyntax type, Microsoft.CodeAnalysis.CSharp.Syntax.ParameterListSyntax parameterList, Microsoft.CodeAnalysis.CSharp.Syntax.BlockSyntax body, Microsoft.CodeAnalysis.CSharp.Syntax.ArrowExpressionClauseSyntax expressionBody, Microsoft.CodeAnalysis.SyntaxToken semicolonToken) -> Microsoft.CodeAnalysis.CSharp.Syntax.ConversionOperatorDeclarationSyntax
 Microsoft.CodeAnalysis.CSharp.Syntax.ConversionOperatorDeclarationSyntax.WithExplicitInterfaceSpecifier(Microsoft.CodeAnalysis.CSharp.Syntax.ExplicitInterfaceSpecifierSyntax explicitInterfaceSpecifier) -> Microsoft.CodeAnalysis.CSharp.Syntax.ConversionOperatorDeclarationSyntax
 static Microsoft.CodeAnalysis.CSharp.CSharpGeneratorDriver.Create(params Microsoft.CodeAnalysis.IIncrementalGenerator[] incrementalGenerators) -> Microsoft.CodeAnalysis.CSharp.CSharpGeneratorDriver
+virtual Microsoft.CodeAnalysis.CSharp.CSharpSyntaxVisitor<TResult>.VisitListPattern(Microsoft.CodeAnalysis.CSharp.Syntax.ListPatternSyntax node) -> TResult
+virtual Microsoft.CodeAnalysis.CSharp.CSharpSyntaxVisitor<TResult>.VisitSlicePattern(Microsoft.CodeAnalysis.CSharp.Syntax.SlicePatternSyntax node) -> TResult
diff --git a/src/Compilers/Core/Portable/PublicAPI.Unshipped.txt b/src/Compilers/Core/Portable/PublicAPI.Unshipped.txt
index 588f28238c3cb..ca94595b9fb08 100644
--- a/src/Compilers/Core/Portable/PublicAPI.Unshipped.txt
+++ b/src/Compilers/Core/Portable/PublicAPI.Unshipped.txt
@@ -72,6 +72,16 @@ Microsoft.CodeAnalysis.LineMapping.LineMapping() -> void
 Microsoft.CodeAnalysis.LineMapping.LineMapping(Microsoft.CodeAnalysis.Text.LinePositionSpan span, int? characterOffset, Microsoft.CodeAnalysis.FileLinePositionSpan mappedSpan) -> void
 Microsoft.CodeAnalysis.LineMapping.MappedSpan.get -> Microsoft.CodeAnalysis.FileLinePositionSpan
 Microsoft.CodeAnalysis.LineMapping.Span.get -> Microsoft.CodeAnalysis.Text.LinePositionSpan
+Microsoft.CodeAnalysis.OperationKind.ListPattern = 114 -> Microsoft.CodeAnalysis.OperationKind
+Microsoft.CodeAnalysis.OperationKind.SlicePattern = 115 -> Microsoft.CodeAnalysis.OperationKind
+Microsoft.CodeAnalysis.Operations.IListPatternOperation
+Microsoft.CodeAnalysis.Operations.IListPatternOperation.DeclaredSymbol.get -> Microsoft.CodeAnalysis.ISymbol?
+Microsoft.CodeAnalysis.Operations.IListPatternOperation.IndexerSymbol.get -> Microsoft.CodeAnalysis.ISymbol?
+Microsoft.CodeAnalysis.Operations.IListPatternOperation.LengthSymbol.get -> Microsoft.CodeAnalysis.ISymbol?
+Microsoft.CodeAnalysis.Operations.IListPatternOperation.Patterns.get -> System.Collections.Immutable.ImmutableArray<Microsoft.CodeAnalysis.Operations.IPatternOperation!>
+Microsoft.CodeAnalysis.Operations.ISlicePatternOperation
+Microsoft.CodeAnalysis.Operations.ISlicePatternOperation.Pattern.get -> Microsoft.CodeAnalysis.Operations.IPatternOperation?
+Microsoft.CodeAnalysis.Operations.ISlicePatternOperation.SliceSymbol.get -> Microsoft.CodeAnalysis.ISymbol?
 Microsoft.CodeAnalysis.SymbolDisplayMiscellaneousOptions.CollapseTupleTypes = 512 -> Microsoft.CodeAnalysis.SymbolDisplayMiscellaneousOptions
 override Microsoft.CodeAnalysis.LineMapping.Equals(object? obj) -> bool
 override Microsoft.CodeAnalysis.LineMapping.GetHashCode() -> int
@@ -127,3 +137,7 @@ static Microsoft.CodeAnalysis.IncrementalValueProviderExtensions.WithComparer<TS
 virtual Microsoft.CodeAnalysis.Diagnostics.AnalyzerReference.GetGenerators(string! language) -> System.Collections.Immutable.ImmutableArray<Microsoft.CodeAnalysis.ISourceGenerator!>
 virtual Microsoft.CodeAnalysis.Diagnostics.AnalyzerReference.GetGeneratorsForAllLanguages() -> System.Collections.Immutable.ImmutableArray<Microsoft.CodeAnalysis.ISourceGenerator!>
 abstract Microsoft.CodeAnalysis.Compilation.GetUsedAssemblyReferences(System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) -> System.Collections.Immutable.ImmutableArray<Microsoft.CodeAnalysis.MetadataReference!>
+virtual Microsoft.CodeAnalysis.Operations.OperationVisitor.VisitListPattern(Microsoft.CodeAnalysis.Operations.IListPatternOperation! operation) -> void
+virtual Microsoft.CodeAnalysis.Operations.OperationVisitor.VisitSlicePattern(Microsoft.CodeAnalysis.Operations.ISlicePatternOperation! operation) -> void
+virtual Microsoft.CodeAnalysis.Operations.OperationVisitor<TArgument, TResult>.VisitListPattern(Microsoft.CodeAnalysis.Operations.IListPatternOperation! operation, TArgument argument) -> TResult?
+virtual Microsoft.CodeAnalysis.Operations.OperationVisitor<TArgument, TResult>.VisitSlicePattern(Microsoft.CodeAnalysis.Operations.ISlicePatternOperation! operation, TArgument argument) -> TResult?