I’ve never received any update notifications on Ubuntu. Is there a way to troubleshoot it using the debugging console (e.g. calling the update notification method and see if it does something)?
I do get notifications from To-Dos though!
Notifications are switched on for Joplin and I’ve also enabled the “automatic” updates (which I understand is only the reminder atm) in Joplin.
I’m surprised there isn’t one, but then again I thought I had notifications disabled until your post prompted me to check, turns out they were enabled this entire time!
I usually only ever update when the mobile client needs me to because there are backward-incompatible changes. Now I don't use Joplin on mobile any more, I guess it'll be even more infrequent because I just don't know when there are updates.
You can always get release notifications by email via GitHub...
It does include pre-releases but you can just ignore it. Of course you do still get to see the pre-release info, which indicates what changes will be present in the full release when it comes out.