The released date has been announced here, however some of the screenshots might spoil the content a bit if you want to go in blind. Here are some of the tweaks coming with next update (taken from id software weekly streams):
No I don’t mean jail-breaking and homebrewing, or the OG PS3 having backwards compatibility, but just on the PS Store.
All you have to do is search PSOne or PS2 and it’ll bring up the PS3 stores entire catalogue for either. And no it isn’t restricted to a certain console version, they’re just games on the store.
The PS3 specifically has a decently wide variety of PS1 and PS2 games, ranging from PS1 series like Dino Crisis, Syphon Filter, and Gex to ps2 series such as Blood Rayne, Fatal Frame and GTA. And plenty of classic one-offs in between.
Also the PS1 games are mostly all $5.99 where the PS2 games are $10 and it’s good to note that a lot/most of these are not available on PS4 or PS5.