The most recent patch is not only about the 20th Anniversary content.
As we recently informed, January marks the celebration of Diablo’s 20th Anniversary. There’s the Darkening of Tristram event (as for now, it’s live on all platforms) and there are some other changes released thanks to the Patch 2.4.3.
It wasn’t announced before, but Diablo III now supports PlayStation 4 Pro features. It’s a surprising thing because the game already worked great in 1080p / 60 FPS. The biggest change is the higher resolution.
“Support has been added for 4k ouput for the PS4 Pro,” we read in the official patch notes (yes, there’s a misspelling). It’s not confirmed if that means full 4K or some form of upscalling.