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Hopefully (but not holding my breath) it addresses the fact that "My Computer" Photo libraries either take many many minutes to load, or never load at all. That's new behavior.
I’m in the same boat. The home sharing of photos has been getting slower and slower as the Apple TV updates roll out. With 15.1.1 I’m lucky if my photo library loads at all. Videos are fine. Photos… forget it. This used to be such a nice feature.
 
I don't know if it's this TVOS update or other apps', but my ATV experience has never been so faulty: random subtitle settings occurring by themselves, shows not appearing in Next Up (even though the apps are linked to the TV app), new episodes not showing up, etc.
 
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