Update: The event's line-up's confirmed here. Kingdom Hearts: Birth by Sleep (PSP), Kingdom Hearts 358/2 Days (DS), Kingdom Hearts: Coded (mobile), Dissidia Final Fantasy (PSP), FFXIII (PS3, 360), FF Agito XIII (PSP), FF Versus XIII (PS3) and FF VII Advent Children Complete all made the cut.
On Famitsu. There's nothing there in terms of games as there was a strict no photography policy in place in the demo sessions themselves, but it's believed new trailers were seen for Final Fantasy XIII and Final Fantasy Versus XIII. More about the event is sure to come out later in the day.