According to the poster, the game will be titled Sly 5: Master of Thieves and will be releasing for the PS4 and PS Vita systems. This means two things: Sly Cooper will be remaining as a Playstation Exclusive, and the development team will not be supporting PS3 play. Also, while its hard to make out, it appears that Sucker Punch Studios (The development team behind the original Sly trilogy, but not Thieves in Time) will not be developing Sly 5 either, as there logo does not appear to be on the bottom. However, Sanzurus (The team behind Sly 4) logo isnt visible either, so there may be a third developer joining in on the Sly Cooper franchise.
http://linkters.com/sly-5-details-potentially-leaked/
@notaxation 6:52 PM
This has been floating around for a couple of days, so it's worth noting: Sly Cooper 5: Master of Thieves is fake.