Freeze dates for Debian's next release

[Yavor Doganov]

FYI, Debian has announced[1] the preliminary freeze dates in
preparation for the next stable release 12 (bookworm):

2023-01-12      - Milestone 1 - Transition and toolchain freeze
2023-02-12      - Milestone 2 - Soft Freeze
2023-03-12      - Milestone 3 - Hard Freeze - for key packages and
                                packages without autopkgtests
To be announced - Milestone 4 - Full Freeze

IOW, to get into the next Debian release GNUstep core should plan
releasing around December this year, ideally before Christmas.
Apps like Gorm/GAP/etc can still get in if released Jan/Feb 2023
provided they don't contain a library/framework with incompatible
changes in the new release(s).

I will send a reminder/update around the summer or whenever there is a
serious change in the schedule.

[1] https://lists.debian.org/debian-devel/2022/03/msg00251.html