I learned that the next update will be early this week and version 18.0 is going to be skipped.
But apart from users telling everyone that it has been updated, is there a way to check for yourself which version it is? Like an 'about Lemmy' or something?
Another way you can check is using FediDB. Just search the server you are curious about and it will tell you the software and its version. Also a good way to see other interesting stats about the instance.