diff --git a/CHANGELOG.md b/CHANGELOG.md
index 00cbbd1..786fa60 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## Pending Changes
+### Added
+- Ability to include pending changes in changelog for unreleased changes
+- Test for the release preview flag
+
+---
 ## 0.8.0
 ### Added
 - Preview option for changelogs on the `release` and `bump` command
diff --git a/README.md b/README.md
index 5c4cefa..07c3fea 100644
--- a/README.md
+++ b/README.md
@@ -114,6 +114,16 @@ $ codelog release 1.0.0 --preview
 ```
 Will display a preview of your changes on your console as if the version **1.0.0** has been released.
 
+### Add Pending Releases to Changelog
+
+You may find yourself wanting to include all of your unreleased changes in your changelog, whether it be for testing purposes or as a list of changes coming soon. The `pending` command does that for you.
+
+```bash
+$ codelog pending <TITLE>
+```
+
+`TITLE` is an option argument that is effectively the "Version" pending. The default value is `Pending Changes`.
+
 ## Configuring
 
 Since version 0.3.0, there are a few configurations that are possible. You can choose:
diff --git a/changelogs/codelog.yml b/changelogs/codelog.yml
index 452d18d..2361b04 100644
--- a/changelogs/codelog.yml
+++ b/changelogs/codelog.yml
@@ -2,6 +2,7 @@
 
 header_textfile: changelogs/header.txt
 default_changelog_filename: CHANGELOG.md
+default_pending_changes_title: "Pending Changes"
 
 # Tag formatting  ---------------------------------------------------
 
diff --git a/changelogs/releases/pending.md b/changelogs/releases/pending.md
new file mode 100644
index 0000000..e4123a9
--- /dev/null
+++ b/changelogs/releases/pending.md
@@ -0,0 +1,6 @@
+## Pending Changes
+### Added
+- Ability to include pending changes in changelog for unreleased changes
+- Test for the release preview flag
+
+---
diff --git a/changelogs/unreleased/20210407134249312_change.yml b/changelogs/unreleased/20210407134249312_change.yml
new file mode 100644
index 0000000..090a7d1
--- /dev/null
+++ b/changelogs/unreleased/20210407134249312_change.yml
@@ -0,0 +1,3 @@
+"Added":
+  - Ability to include pending changes in changelog for unreleased changes
+  - Test for the release preview flag
diff --git a/lib/codelog.rb b/lib/codelog.rb
index 80cadac..0514b57 100644
--- a/lib/codelog.rb
+++ b/lib/codelog.rb
@@ -9,6 +9,7 @@
 require 'codelog/command/regenerate'
 require 'codelog/command/release'
 require 'codelog/command/preview'
+require 'codelog/command/pending'
 require 'codelog/command/bump'
 require 'codelog/command/step/changelog'
 require 'codelog/command/step/delete'
diff --git a/lib/codelog/cli.rb b/lib/codelog/cli.rb
index a2f45ca..a442200 100644
--- a/lib/codelog/cli.rb
+++ b/lib/codelog/cli.rb
@@ -37,6 +37,13 @@ def release(version_number,
       end
     end
 
+    desc 'pending <TITLE>', 'Generate pending changelog from unreleased files'
+    method_option :title, desc: 'Title to use for the unreleased changes section',
+                          aliases: ['-t', '--title'], type: :string
+    def pending(title = Codelog::Config.pending_changes_title)
+      Codelog::Command::Pending.run title
+    end
+
     desc 'bump [VERSION_TYPE] <RELEASE_DATE>', "Bumps the next version, \
 being it major, minor or patch"
     method_option :preview, desc: 'Prints the preview of the next version',
diff --git a/lib/codelog/command/pending.rb b/lib/codelog/command/pending.rb
new file mode 100644
index 0000000..bb0dab6
--- /dev/null
+++ b/lib/codelog/command/pending.rb
@@ -0,0 +1,20 @@
+module Codelog
+  module Command
+    class Pending
+      RELEASES_PATH = 'changelogs/releases'.freeze
+
+      def self.run(title)
+        Codelog::Command::Pending.new.run title
+      end
+
+      def run(title)
+        outputter = Codelog::Output::ReleaseFile.new("#{RELEASES_PATH}/pending.md")
+        Codelog::Command::Step::Version.run title,
+                                            Date.today.strftime(Codelog::Config.date_input_format),
+                                            outputter
+        Codelog::Command::Step::Changelog.run
+        puts "\n== Pending changes added to changelog =="
+      end
+    end
+  end
+end
diff --git a/lib/codelog/command/regenerate.rb b/lib/codelog/command/regenerate.rb
index 815837b..f9d75fe 100644
--- a/lib/codelog/command/regenerate.rb
+++ b/lib/codelog/command/regenerate.rb
@@ -7,7 +7,7 @@ def self.run
 
       def run
         Codelog::Command::Step::Changelog.run
-        puts "The CHANGELOG was regenerated successfully!"
+        puts 'The CHANGELOG was regenerated successfully!'
       end
     end
   end
diff --git a/lib/codelog/command/step/changelog.rb b/lib/codelog/command/step/changelog.rb
index 4e11c0d..0c1c922 100644
--- a/lib/codelog/command/step/changelog.rb
+++ b/lib/codelog/command/step/changelog.rb
@@ -22,7 +22,7 @@ def changes
           version_changelogs = Dir['changelogs/releases/*.md']
           version_changelogs.sort_by! do |file_name|
             version_number = file_name.split('/').last.chomp('.md')
-            Gem::Version.new(version_number)
+            version_number == 'pending' ? version_number : Gem::Version.new(version_number).to_s
           end.reverse!
           version_changelogs.inject([]) do |partial_changes, version_changelog|
             partial_changes + File.readlines(version_changelog)
diff --git a/lib/codelog/command/step/delete.rb b/lib/codelog/command/step/delete.rb
index f7fb7b4..c29e113 100644
--- a/lib/codelog/command/step/delete.rb
+++ b/lib/codelog/command/step/delete.rb
@@ -13,6 +13,7 @@ def self.run
         def run
           chdir Dir.pwd do
             system('rm -rv changelogs/unreleased/*.yml')
+            system('[ -f changelogs/releases/pending.md ] && rm -rv changelogs/releases/pending.md')
           end
         end
       end
diff --git a/lib/codelog/config.rb b/lib/codelog/config.rb
index d5c8190..ec0f3db 100644
--- a/lib/codelog/config.rb
+++ b/lib/codelog/config.rb
@@ -9,6 +9,10 @@ def filename
         settings['default_changelog_filename'] || 'CHANGELOG.md'
       end
 
+      def pending_changes_title
+        settings['default_pending_changes_title'] || 'Pending Changes'
+      end
+
       def header
         File.open(settings['header_textfile'], 'r').read || ''
       end
diff --git a/lib/codelog/output/release_file.rb b/lib/codelog/output/release_file.rb
index f70bdd1..88260c0 100644
--- a/lib/codelog/output/release_file.rb
+++ b/lib/codelog/output/release_file.rb
@@ -11,7 +11,7 @@ def self.print(content, file_path)
 
       def print(content)
         Dir.chdir Dir.pwd do
-          File.open(@file_path, 'a') do |line|
+          File.open(@file_path, 'w+') do |line|
             line.puts content
           end
         end
diff --git a/spec/codelog/cli_spec.rb b/spec/codelog/cli_spec.rb
index 452e934..acb43ff 100644
--- a/spec/codelog/cli_spec.rb
+++ b/spec/codelog/cli_spec.rb
@@ -43,6 +43,31 @@
         subject.release '1.2.3', '2012-12-12'
         expect(Codelog::Command::Release).to have_received(:run).with '1.2.3', '2012-12-12'
       end
+
+      it 'calls the release command with the preview flag' do
+        allow(Codelog::Command::Preview).to receive(:run)
+        subject.options = {preview: true}
+        subject.release '1.2.3', '2012-12-12'
+        expect(Codelog::Command::Preview).to have_received(:run).with '1.2.3', '2012-12-12'
+      end
+    end
+  end
+
+  describe '#regenerate' do
+    it 'calls the regenerate command' do
+        allow(Codelog::Command::Regenerate).to receive(:run)
+        subject.regenerate
+        expect(Codelog::Command::Regenerate).to have_received(:run)
+    end
+  end
+
+  describe '#pending' do
+    context 'passing the title as an argument' do
+      it 'calls the pending command' do
+        allow(Codelog::Command::Pending).to receive(:run)
+        subject.pending 'Pending Changes'
+        expect(Codelog::Command::Pending).to have_received(:run).with 'Pending Changes'
+      end
     end
   end
 
diff --git a/spec/codelog/command/pending_spec.rb b/spec/codelog/command/pending_spec.rb
new file mode 100644
index 0000000..2dbc62b
--- /dev/null
+++ b/spec/codelog/command/pending_spec.rb
@@ -0,0 +1,24 @@
+require 'spec_helper'
+
+describe Codelog::Command::Pending do
+  describe '#run' do
+    let(:mock_file_outputter) { double(Codelog::Output::ReleaseFile) }
+
+    it 'adds the pending changes to the changelog' do
+      allow(Codelog::Command::Step::Version).to receive(:new)
+      allow(Codelog::Output::ReleaseFile).to receive(:new).and_return(mock_file_outputter)
+
+      expect(Codelog::Command::Step::Version).to receive(:run).with('Pending Changes', Date.today.strftime(Codelog::Config.date_input_format), mock_file_outputter)
+      expect(Codelog::Command::Step::Changelog).to receive(:run)
+      expect(subject).to receive(:puts).with("\n== Pending changes added to changelog ==")
+      subject.run 'Pending Changes'
+    end
+  end
+
+  describe '.run' do
+    it 'creates an instance of the class to run the command' do
+      expect_any_instance_of(described_class).to receive(:run).with 'Pending Changes'
+      described_class.run 'Pending Changes'
+    end
+  end
+end
diff --git a/spec/codelog/command/regenerate_spec.rb b/spec/codelog/command/regenerate_spec.rb
index 2cfb611..ad8c526 100644
--- a/spec/codelog/command/regenerate_spec.rb
+++ b/spec/codelog/command/regenerate_spec.rb
@@ -1,12 +1,18 @@
 require 'spec_helper'
 
 describe Codelog::Command::Regenerate do
+  describe '#run' do
+    it 'calls the "Changelog" step to re-generate the CHANGELOG using existing releases' do
+      expect(Codelog::Command::Step::Changelog).to receive(:run)
+      expect(subject).to receive(:puts).with("The CHANGELOG was regenerated successfully!")
+      subject.run
+    end
+  end
+
   describe '.run' do
     it 'calls the "Changelog" step to re-generate the CHANGELOG using existing releases' do
       allow(Codelog::Command::Step::Changelog).to receive(:run)
-
       described_class.run
-
       expect(Codelog::Command::Step::Changelog).to have_received(:run)
     end
   end
diff --git a/spec/codelog/command/step/changelog_spec.rb b/spec/codelog/command/step/changelog_spec.rb
index d0b3882..3f77fed 100644
--- a/spec/codelog/command/step/changelog_spec.rb
+++ b/spec/codelog/command/step/changelog_spec.rb
@@ -21,6 +21,7 @@
 
     it 'creates a changelog file from the releases' do
       allow(mocked_changelog).to receive(:puts)
+      expect(File).to receive(:open).with('changelogs/header.txt', 'r').and_return(mocked_header_textfile)      
       expect(File).to receive(:open).with('CHANGELOG.md', 'w+').and_yield mocked_changelog
       subject.run
       expect(mocked_changelog).to have_received(:puts).with(['line_2\n', 'line_1\n'])
diff --git a/spec/codelog/command/step/delete_spec.rb b/spec/codelog/command/step/delete_spec.rb
index 3c2ffe0..25ac9a8 100644
--- a/spec/codelog/command/step/delete_spec.rb
+++ b/spec/codelog/command/step/delete_spec.rb
@@ -10,6 +10,8 @@
     it 'removes all the files from the unreleased folder' do
       expect(subject).to have_received(:system)
         .with('rm -rv changelogs/unreleased/*.yml')
+      expect(subject).to have_received(:system)
+        .with('[ -f changelogs/releases/pending.md ] && rm -rv changelogs/releases/pending.md')
     end
   end
 
diff --git a/spec/codelog/config_spec.rb b/spec/codelog/config_spec.rb
index 3f5f11f..ac6d2ad 100644
--- a/spec/codelog/config_spec.rb
+++ b/spec/codelog/config_spec.rb
@@ -22,6 +22,12 @@
     end
   end
 
+  describe '#pending_changes_title' do
+    it 'returns the correct pending changelog title' do
+      expect(described_class.pending_changes_title).to eq('Pending Changes')
+    end
+  end
+
   describe '#header' do
     let(:mocked_header_file) { double(File, read: 'stubbed header') }
 
diff --git a/spec/codelog/output/release_file_spec.rb b/spec/codelog/output/release_file_spec.rb
index 9a27f9b..e079ac5 100644
--- a/spec/codelog/output/release_file_spec.rb
+++ b/spec/codelog/output/release_file_spec.rb
@@ -15,7 +15,7 @@
     it 'prints the passed content in a file on the passed path' do
       subject
 
-      expect(File).to have_received(:open).with(file_path, 'a')
+      expect(File).to have_received(:open).with(file_path, 'w+')
       expect(mocked_file).to have_received(:puts).with(file_content)
     end
   end