There is a pinned topic but not very specific on what to expect:
Well, there are quite some apps developed by the community, the translation relies a lot on the community, and the community is even involved in testing and documentation. Therefore it is important to communicate about future versions before they are actually released. Since there are different platforms (transifex, github, forum) it’s not so bad to centralize this on the forum.
There have been announcements in the past for new releases in this section, recently it is more often on the News section.
You probably just want a feed to get news about a new release, you could e.g. hook up to the github releases (you will also get the beta and RC releases). Normally, your Nextcloud can also check for updates on a regular basis and send you notifications within Nextcloud.
Not sure the best way to clean up things a bit…