2ch says that at the end, they advertised a new original anime by the Gurren Lagann staff that's been rumored for a while...
Director: Hiroyuki Imaishi
Character design: Atsushi Nishigori
Main animator: You Yoshinari
....OMG SERIOUSLY AHHHHHHHHHHHHHHHHHHHHHHH *EXPLODES*
EDIT: Wait what? Yoshinari is character designer? I'm getting some conflicting news here... The anime is about...panty stockings...? What...?? Well, seems it'll be announced in this month's Newtype so we'll know more then...
EDIT 2: Duuude if this is the new GAINAX anime taking place in 1900-1930's England and Imaishi is the director....I seriously can't begin to imagine what that's going to be like. LMAO.
EDIT 2: Wait, seriously? The anime is called "Panty&Stocking"? Huh...?! WAIT WAIT WAIT, so the two heroines are named Panty and Stocking and there's a guy named Garter Belt...? WHAT. XD "It's like Dead Leaves became cute and catchy." O...OMG WHAT.