Here is the current schedule for upcoming content coming soon to the Xbox LIVE Marketplace starting from 09/04/10.
Xbox LIVE Deal of the Week
March 15: Fable Originals, 800 Points
March 22: Fallout 3 Game Add-ons :Operation: Anchorage, The Pitt, Broken Steel, Point Lookout and Mothership Zeta, 400 points each
Xbox LIVE Games on Demand
March 9: Condemned: Criminal Origins (not available in Germany, Japan, India or Korea)
March 9: Guilty Gear 2 Overture (Japan)
Xbox LIVE Arcade
As part of the Block Party promotion, here is the Arcade schedule for March.
March 10: Scrap Metal, 1200 points
March 17: Perfect Dark, 800 points
March 24: Game Room, Free to download. Individual games will cost 240 to 400 points
Xbox Avatar Marketplace
March 11: St. Patty's Day
March 11: Scrap Metal
March 18: Perfect Dark
March 18: Alan Wake
March 9: Forza Motorsport 3 Jalopnik Car Pack, 400 Microsoft Points
March 11: BioShock 2 Sinclair Solutions Tester Pack, 800 Microsoft Points
March 16: Dragon Age: Origins Awakening Expansion Pack, 3200 Microsoft Points
Please note that the items listed above are not guaranteed and may change at any time.