diff --git a/CHANGELOG.md b/CHANGELOG.md
index 68781c8..ae79457 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,13 +7,15 @@ The format follows *Keep a Changelog*. Versions use semantic versioning with pre
 ## [v0.4.25] - 2026-02-18
 
 ### Added
-- TODO
+- Added completion/signpost instrumentation (`os_signpost`) for inline completion, syntax highlighting, and file save paths to support performance profiling.
 
 ### Improved
-- TODO
+- Improved inline code completion responsiveness with trigger-aware scheduling, adaptive debounce, and short-lived context caching.
+- Improved editor rendering performance with coalesced highlight refreshes and reduced heavy-feature work on very large documents.
 
 ### Fixed
-- TODO
+- Fixed redundant save writes by skipping unchanged file content saves via content fingerprinting.
+- Fixed macOS syntax-highlighting churn during typing by limiting many highlight passes to local edited regions when safe.
 
 ## [v0.4.24] - 2026-02-18
 
diff --git a/Neon Vision Editor.xcodeproj/project.pbxproj b/Neon Vision Editor.xcodeproj/project.pbxproj
index 4ab5b2d..4920805 100644
--- a/Neon Vision Editor.xcodeproj/project.pbxproj	
+++ b/Neon Vision Editor.xcodeproj/project.pbxproj	
@@ -358,7 +358,7 @@
 				CODE_SIGNING_ALLOWED = YES;
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 263;
+				CURRENT_PROJECT_VERSION = 264;
 				DEAD_CODE_STRIPPING = YES;
 				DEVELOPMENT_TEAM = CS727NF72U;
 				ENABLE_APP_SANDBOX = YES;
@@ -439,7 +439,7 @@
 				CODE_SIGNING_ALLOWED = YES;
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 263;
+				CURRENT_PROJECT_VERSION = 264;
 				DEAD_CODE_STRIPPING = YES;
 				DEVELOPMENT_TEAM = CS727NF72U;
 				ENABLE_APP_SANDBOX = YES;
diff --git a/Neon Vision Editor/UI/PanelsAndHelpers.swift b/Neon Vision Editor/UI/PanelsAndHelpers.swift
index 30981f6..4b78a0f 100644
--- a/Neon Vision Editor/UI/PanelsAndHelpers.swift	
+++ b/Neon Vision Editor/UI/PanelsAndHelpers.swift	
@@ -223,9 +223,10 @@ struct WelcomeTourView: View {
             title: "What’s New in This Release",
             subtitle: "Major changes since v0.4.24:",
             bullets: [
-                "TODO",
-                "TODO",
-                "TODO"
+                "Added completion/signpost instrumentation (`os_signpost`) for inline completion, syntax highlighting, and file save paths to support performance profiling.",
+                "Improved inline code completion responsiveness with trigger-aware scheduling, adaptive debounce, and short-lived context caching.",
+                "Improved editor rendering performance with coalesced highlight refreshes and reduced heavy-feature work on very large documents.",
+                "Fixed redundant save writes by skipping unchanged file content saves via content fingerprinting."
             ],
             iconName: "sparkles.rectangle.stack",
             colors: [Color(red: 0.40, green: 0.28, blue: 0.90), Color(red: 0.96, green: 0.46, blue: 0.55)],
diff --git a/README.md b/README.md
index 91498b4..96368e1 100644
--- a/README.md
+++ b/README.md
@@ -130,9 +130,11 @@ If macOS blocks first launch:
 
 ### v0.4.25 (summary)
 
-- TODO
-- TODO
-- TODO
+- Added completion/signpost instrumentation (`os_signpost`) for inline completion, syntax highlighting, and file save paths to support performance profiling.
+- Improved inline code completion responsiveness with trigger-aware scheduling, adaptive debounce, and short-lived context caching.
+- Improved editor rendering performance with coalesced highlight refreshes and reduced heavy-feature work on very large documents.
+- Fixed redundant save writes by skipping unchanged file content saves via content fingerprinting.
+- Fixed macOS syntax-highlighting churn during typing by limiting many highlight passes to local edited regions when safe.
 
 ### v0.4.24 (summary)