Feel free to head over to the Wiki and edit away or clone the relevant sites and submit PR’s for the changes?
Release Notes, Change Logs, Weekly Reviews etc are provided, Tumbleweed users are expected to at least follow the factory mailing list for up and coming changes (some lively discussion on replacing shadow-pw-mgmt with account-utils), likewise the recent XBOOTLDR implementation to alleviate those small ESP’s.
Ref: https://forums.opensuse.org/t/support-of-xbootldr-in-opensuse/194794
Leap 16.0 has been out over a year, Leap 15.6 EoL was extended and officially went EoL just over two months ago and your only now looking at migration?