Final polish for 3.4.0 announcement

Author: Kordyjan

blog/_posts/2024-02-29-scala-3.4.0-and-3.3.3-released.md

@@ -98,13 +98,14 @@ Release notes of [3.4.0](https://github.com/lampepfl/dotty/releases/tag/3.4.0) c
 
   This will improve the user experience when the class file format changes unexpectedly. This feature will be backported to Scala 3.3.3.
 - Progress reporting of compilation is now visible in IDEs. Metals IDE users will notice that compilation progress is no longer frozen at 0% when using sbt or bloop as the BSP server. IntelliJ will also correctly report progress for BSP and sbt based projects.
+- Diagnostics (including unused warnings) are now exported to SemanticDB. That will allow better handling of warnings in tooling. See [#17835](https://github.com/lampepfl/dotty/pull/17835)
 
 ### Experimental changes
 
 - An experimental `@publicInBinary` annotation can mark definitions that should be treated as a part of binary API. It is useful where some protected or private-in-package definitions are used in the inlined code. When they are marked, it is harder to accidentally break the binary compatibility by doing seemingly harmless refactoring. If the accompanying `-WunstableInlineAccessors` linting option is enabled. There will be a warning about using things not marked as binary API in inlined code. Originaly it was presented in [SIP-52](https://docs.scala-lang.org/sips/binary-api.html).
 - `-experimental` compiler flags will mark all top-level definitions as `@experimental`. This means that the experimental language features and definitions can be used in the project. Note that this does not change the strong guarantees of the stability of the non-experimental code. The experimental features can only be used in an experimental scope (transitively). In 3.5, we plan to allow using this flag also in the stable releases of the compiler.
 
-### Legacy syntax depreacations
+### Legacy syntax depreacation
 
 Following syntax is now deprecated and will report warnings when used:
 
@@ -153,7 +154,7 @@ or globally using the `-source 3.3` flag.
 
 ## Contributors
 
-Thank you to all the contributors who made the release of 3.4.0 and 3.3.2 LTS possible!
+Thank you to all the contributors who made the release of 3.4.0 and 3.3.3 LTS possible!
 
 According to `git shortlog -sn --no-merges 3.3.1..3.4.0` these are: