it could also be the ps3. but, God of War 3 had some parts in the game that were just extremely glitched. example: there was a part where you are holding the head of so and so and you are using it to light a cave, and if you hold it while falling down (which starts a cutsceen) the game will freeze and you have to restart.
It will be under raps for at least 3 months, the E3 was to gather some hype for it. It was just announced and shown at E3, and there is a possibility that it is made for the Next Gen of Ps3. So release date is not coming any time soon