[ANNOUNCE] Wayland 1.22.0 release schedule

[Simon Ser]

Hi all,

Here is the release schedule for Wayland 1.22.0:

- Alpha: February 28th
- Beta: March 14th
- RC1: March 28th
- First potential final release: April 4th

Package maintainers are encouraged to pick up the pre-releases to make
sure packaging can be tested (and fixed) before the stable release.

Let me know if you'd like a pending patch to make it in the release.

Thanks,

Simon