Update changelog and version for 1.28.0. (#13963)

* Update changelog and version for 1.28.0.

Author: sean-mcmanus

Extension/CHANGELOG.md

@@ -1,5 +1,15 @@
 # C/C++ for Visual Studio Code Changelog
 
+## Version 1.28.0: September 25, 2025
+### Enhancements
+* Add IntelliSense support for c23 `bool`, `true`, and `false`. [#13737](https://github.com/microsoft/vscode-cpptools/issues/13737)
+* Update the bundled `clang-tidy` and `clang-format` from 20.1.7 to 21.1.2.
+
+### Bug Fixes
+* Fix `cpptools` getting stuck when `clang-format` is invoked on a file in a `.clang-format-ignore`. [#13937](https://github.com/microsoft/vscode-cpptools/issues/13937)
+* Fix the `C/C++ Properties Schema Reference` link in the configuration UI editor. [#13949](https://github.com/microsoft/vscode-cpptools/issues/13949)
+* Fix a crash with `preReleaseCheck`. [#13953](https://github.com/microsoft/vscode-cpptools/issues/13953)
+
 ## Version 1.27.7: September 18, 2025
 ### Enhancements
 * Show a warning when too many files are processed in a workspace. [#10828](https://github.com/microsoft/vscode-cpptools/issues/10828)

Extension/package.json

@@ -2,7 +2,7 @@
     "name": "cpptools",
     "displayName": "C/C++",
     "description": "C/C++ IntelliSense, debugging, and code browsing.",
-    "version": "1.27.7-main",
+    "version": "1.28.0-main",
     "publisher": "ms-vscode",
     "icon": "LanguageCCPP_color_128x.png",
     "readme": "README.md",