It is not a release, but just the frequently updates you get when you have a subscription of photoshop for photographers (it includes photoshop and lightroom)
Every now and than I receive a message over creative cloud that a new update is available. But since a week or so I get always this message after downloading that tells me" U44M1|210.
Formerly I could still work with photoshop, but without updates, but since I deleted photoshop, to see if a totally new update would help,
I have no photoshop at all anymore.