Xbox Live update: what’s new this week?

It's an XBLA-led party on Xbox Live this week, with Jet Set Radio, goofy platformer Hell Yeah! and high-kicking remaster Marvel vs Capcom Origins doing their utmost to weasel pounds from pockets. Might be a good time to pick up some Deus Ex add-ons, assuming you're not saving cash for Borderlands 2's Season Pass and Battlefield 3's Armored Kill pack.