Timeline for 2.13 SOF release

[kv2019i]

Checklist for 2.13 created today with proposed dates for a May release:
#9863

May 2025 follows the target cadence agreed in SOF TSC, where SOF is following the 4-month cadence of Zephyr https://github.com/zephyrproject-rtos/zephyr/wiki/Release-Management so that SOF release is 2 months after Zephyr release (e.g. Zephyr 4.1 release target is March 2025).

Note: at this point, only the release timeline is aligned. SOF does not sync the Zephyr code version to a Zephyr release tag, but instead a commit from Zephyr main is used as a basis of the release. For example SOF2.12 release uses a snapshot of Zephyr main taken in December during v4.1 development cycle.

[kv2019i]

FYI to @thesofproject/steering-committee

[lgirdwood]

@kv2019i snapshot on top of latest Zephyr release should be targeted, unless we are still in the position of WIP drivers/infra still being upstreamed (which I think will still probably be true).