Going back in topic, the
official site for this has been lately updated a bunch of details and stuff (events on Akihabara with an special voice track CD and events on net shows like the one from Yuka Otsubo), they are obviously trying to pump up the hype for this.
(Kinda old, but) , you can check more stuff on the
GABunko channel if you are good at nihongo, most stuff is only at "interview level" though, so don't expect to see early scenes of the anime or stuff like that