MULTIPLAYER/CO-OP IS GO

(click on blog entry title to link to Well's confirmation!)

YES. EPIC WIN.

And so Wells confirms the rumors about multiplayer and co-op gameplay, and that you get the beta voucher with InFamous, and the trailer looks super fly and cool!

CVG has a formal Sony release write-up here.
Some details:

Multiplayer is up to 10 players, 5 v. 5

Team Death Match and Capture the Treasure modes

up to 3 player co-op missions

competitive ranking system

currency system that seems to be earned like trophies/medals you can use to unlock cool bonuses (currency can also be earned in single player mode)

Exciting, no!?