Sony has announced its new September offerings of free games for all three consoles and it's a mix of everything across the board.
On it's day one release, Velocity 2X is available out of the gate for PS4 and Vita as well as platforming adventure game Sportsfriends as a cross-buy option for PS4/PS3. On PS3, subscribers will be getting Hoard and PlayStation All Stars Battle Royale. Battle Royale can also be found on the Vita alongside TcK and Joe Danger.
So to recap:
Velocity 2X (PS4/Vita)
Battle Royale (PS3/Vita)
Joe Danger (Vita)
These freebies are good on the September 2nd and last until October 7th.