Hey @hansaplast (you bring up some painful memories.. )
So, the part in the url 12345ab.. is the global id of the app now! It doesn't matter if you rename it or move it across folders. In fact, you can delete anything after the id and the URL will still work.
Correct, previously, we had slugs in the URL that would change based on the folder/name making changes to it break all external links.
Releases aren't give new URLs (unless you preview a specific release)
tldr; Yes, you can use this URL (either app/editor version) and it will stay the same across, renames, moves, releases.
thanks for the clarification! Exactly what we wanted and great that we now have stable urls even after renaming/moving!
Btw: I'm not related to the Hansaplast brand, it's just a silly handle I use on the internet