Sony did reveal that Injustice: Gods Among Us - Ultimate Edition and Secret Ponchos would be part of December's Instant Game Collection earlier this month and they have now confirmed the full line up on all platforms. Injustice and Secret Ponchos are joined by Titan Attacks (also on PS3 and PS Vita), Final Horizon (Vita), as well as the weird and wonderful (at least according to some) Deadly Premonition: The Director's Cut and Hitman Trilogy HD on PS4.
Entering PS Plus:
3rd December: Injustice: Gods Among Us - Ultimate Edition (PS4)
3rd December: Secret Ponchos (PS4)
3rd December: Hitman Trilogy HD (PS3)
3rd December: Deadly Premonition: The Director's Cut (PS3)
3rd December: Final Horizon (PS Vita)
3rd December: Titan Attacks (PS4/PS3/PS Vita)
Leaving PS Plus:
3rd December: Binding of Isaac Rebirth (PS4/PS Vita)
3rd December: Steamworld Dig (PS4/PS Vita)
3rd December: Frozen Synapse Prime (PS3)
3rd December: Luftrausers (PS3/PS Vita)
3rd December: The Hungry Horde (PS Vita)
3rd December: Escape Plan (PS4/PS Vita)