There is a big reveal event taking place all over the world tonight where the release date and more will be revealed for Final Fantasy XV.
However, it seems some details have already leaked out. There was a lot of leaked information floating around today about a demo that is meant to go live after the presentation tonight. It will focus on a young Noctis, and here is a video of it in action via Gematsu:
However what really kicked the leaks into overdrive was this now private video hosted by GameSpot which announced a September 30 release date for the game.
The reveal will still be happening, of course, and if you don't want to get your hopes set in stone, none of this is official. The nature of these leaks though seem pretty sure fire.