• Added support for Python 3.13
• Introduced the PLATFORMIO_SYSTEM_TYPE environment variable, enabling manual override of the detected system type for greater flexibility and control in custom build environments
• Enhanced internet connection checks by falling back to HTTPS protocol when HTTP (port 80) fails (issue #4980)
• Upgraded the build engine to the latest version of SCons (4.8.1) to improve build performance, reliability, and compatibility with other tools and systems (release notes)
• Upgraded the Doctest testing framework to version 2.4.11, the GoogleTest to version 1.15.2, and the Unity to version 2.6.0, incorporating the latest features and improvements for enhanced testing capabilities
• Corrected an issue where the incorrect public class was imported for the DoctestTestRunner (issue #4949)