Will GTA 6 be available on the Xbox 360 or PS3 ?

This is a difficult one to answer at this time. We think the game will not be released until 2018 at the earliest. At the time of writing Rockstar have not even announced the game yet. By 2018 we will probably be seeing the next generation of consoles on the market, so I would so, that no, this game will probably not be available on the 360 and PS3 as those machines would be a couple of generations old by the time this game is released. We may be wrong though!!!