So for anyone that's been living under a rock for the past few days, have a read on all the (very awesome) viral stuff Valve has been doing
--> here <--But otherwise,
PORTAL 2 HAS BEEN ANNOUNCED, CONFIRMED. =D
QUOTE (GameInformer)
Portal 2 is set to drop this upcoming holiday season at full retail price. Even though the first game was just a few hours long, the sequel promises some extra content for your return through Aperture Science, most notably the inclusion of co-op.
The game
will have Co Op (DeadMan will be excited!)
GameInformer will be releasing information about Portal every two days
on this page.