2007 PS3 game Warhawk, one of the real pioneers of modern multiplayer console gaming, sadly lost its PlayStation Network support a couple of years ago. Well, it lost its official support; thanks to the hard work of some fans, it’s now back online.
A new support page about the transition to next-gen consoles over on Ubisoft’s website appears to confirm that PS3, PS2, and PS1 games will not be backward compatible on PS5.