So they announced a new style for ps+. Starting next month each platform will receive two titles and they will be available for the month. See titles for June below:
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There's no telling if this will be all the games available, the past two E3s Sony has changed out their yearly Plus offerings at E3. Maybe they are just going to this way now. Which makes sense because it's similar to what Microsoft did with Games with Gold.
Side note: I was thinking with the Sony E3 Experience in theaters, the people that show up will receive a Playstation Packet and a Free Gift. I bet they give out PS+ cards or something. Could you imagine if they gave out Vitas or something. A lot of people say the Vita sales are low but all Vita powers buy a lot of content.