The following games will be added to PlayStation Plus on August 5:

Lara Croft and the Temple of Osiris [PS4]
God of War: Ascension [PS3]
Stealth Inc 2: A Game of Clones [PS4, PS3 and PS Vita]
CastleStorm Complete Edition [PS3 and PS Vita]
Sound Shapes [PS4, PS3 and PS Vita]
Limbo [PS4]

More info here.