The PlayStation Plus Instant Game Collection adds quite a number of high-profile games this month. Headlining the new additions is Deus Ex: Human Revolution, which will be available for members in tomorrow's PlayStation Store update.
Do note that a number of other high-profile games are leaving the service, so make sure you add them to your Download List before they leave Plus. (You'll be able to re-download them any time later, so long as you keep your membership active.) Sleeping Dogs, Ratchet & Clank: All 4 One, inFamous 2, and LittleBigPlanet 2 all leave the service this month. (It being E3 month, we wouldn't be surprised to see some major announcements for next month, however.)