Zephyr 4.0.0-rc3

Hello Zephyr Developers,
The third release candidate for Zephyr 4.0.0 has been tagged:
https://github.com/zephyrproject-rtos/zephyr/releases/tag/v4.0.0-rc3
The merge window for features and enhancements remains closed until 4.0.0 is released.

We continue in the stabilization phase, and only blocker bug-fixes and documentation patches may be merged to the main branch.

You may continue to submit pull requests for new features to gather feedback early or collaborate with others, but the release team would like to encourage everyone to focus on testing, fixing any blocker bugs found, and finalizing release notes.

Subsystem maintainers, please finalize your section in the v4.0 release notes if you have not done that already:
https://github.com/zephyrproject-rtos/zephyr/blob/main/doc/releases/release-notes-4.0.rst

Release milestone dates:
https://github.com/zephyrproject-rtos/zephyr/wiki/Release-Management

Release process:
https://docs.zephyrproject.org/latest/project/release_process.html

Blocker bugs process:
https://docs.zephyrproject.org/latest/project/release_process.html#blocker-bugs

Regards,
The release team.