If we are to believe a bunch of UK retailers, Team Ico's next game The Last Guardian will be released in October. Places like The Hut, ASDA, Tesco, Woolworths and Zavi have all listed the game with a release date of October 7. Game, Play and HMV - more traditional game retailers - haven't said anything yet.
When asked, Sony told VG247 that they haven't announced anything yet.