Immich 1.122, a self-hosted photo and video backup solution, introduces HDR video support, auto server URL switching, custom email templates, and more.
Just don't let it go too stale, I recommend updating it a few days or a week after a release gets made, since sometimes there are patches for important stuff released the next day or so after a minor one. That being said what I do is I have an RSS feed for their releases so I get a notification when a new release has been made and can check the changelog for important information, most of the times it's just bumping the version on the .env file.
The app will complain if the server has an incompatible version. Have had it happen a few times, but usually two or three minor versions difference should be okay.