Here’s a list of upcoming arcade titles and DLC on the Xbox Live Marketplace:

Xbox LIVE Arcade:
October 6: Comic Jumper, 1200 Microsoft Points
October 13: Pinball FX 2, Free game download. Tables purchased individually with free import from original “Pinball FX”
October 13: Sonic the Hedgehog 4 Episode I, 1200 Microsoft Points
October 13: Dead Space Ignition, 400 Microsoft Points
October 20: Super Meat Boy, 1200 Microsoft Points

Xbox LIVE Deal of the Week (For Gold members only)
Week of October 11: Mass Effect 2
Overlord, 400 Microsoft Points
Kasumi Stolen Memory, 400 Microsoft Points
Blood Dragon Armor, 160 Microsoft Points
Suit, 160 Microsoft Points
Helmet, 80 Microsoft Points

Week of October 18 (Xbox LIVE Members’ Choice):
Battlefield: Bad Company 2 Onslaught, 400 Microsoft Points
Battlefield: Bad Company 2 SPECACT Upgrade, 320 Microsoft Points

Xbox Games On Demand:
October 12: Gears of War 2

Xbox LIVE Avatar Marketplace:
October 7: Halloween Collection Update
October 7: NBA 2K11
October 14: Fable III

Xbox Game Add-Ons
October 12: Alan Wake – The Writer, 560 Microsoft Points and available worldwide

Via majornelson