Helldivers and Nom Nom Galaxy are this month's PS+ games for PS4.
PS3 and Vita games are yet to be announced.
EDIT: Here's the full line-up:
Helldivers (PS4/PS3/PS Vita)
Nom Nom Galaxy (PS4)
Persona 4 Arena Ultimax (PS3)
Grid Autosport (PS3)
Lemmings Touch (PS Vita)
Nova 111 (PS4/PS3/PS Vita)
Really good month for me, I have none of them