Major Nelson has posted the Xbox Live Marketplace schedule for the first part of August, detailing the upcoming Deal of the Week, DLC and Xbox Live Arcade releases. The highlights include the Summer of Arcade -- continuing this week with Castlevania: Harmony of Despair -- as well as next week's Deal of the Week, which discounts Dragon Age: Origins DLC. Most notably, the Dragon Age expansion Awakening will be reduced from 3200 MS Points ($40) to 2400 MS Points ($30). Furthermore, the Red Dead Redemption DLC "Legends and Killers" has been dated for August 10. [Update: Rockstar reports that the DLC will be available for both Xbox 360 and PS3 on the same Tuesday.]

As a quick reminder, there are several new items out today, including the Metro 2033 "Ranger Pack," new BioShock 2 DLC and a new weapon pack for Mass Effect 2. Check out the full schedule, including today's new content, after the break.

Today's content (links to Xbox.com)
Mass Effect 2 - Firepower Pack: 160 MS Points ($2)
BioShock 2 - The Protector Trials: 400 MS Points ($5)
BlazBlue: Continuum Shift: "Makoto Nanaya" Playable Character: 560 MS Points ($7)
Metro 2033 - Ranger Pack: 240 MS Points

Xbox LIVE Deal of the Week August 9 through August 22: Dragon Age: Origins
Awakening: 3200 2400 MS Points ($30)
Return to Ostagar: 400 240 MS Points ($3)
Warden's Keep: 560 400 MS Points ($5)
Blood Dragon Red Avatar T-shirt: 80 40 MS Points ($0.50)

Games on Demand
August 2 : Too Human ($29.99)
August 10: Tom Clancy's H.A.W.X
August 10: Disney Sing It: High School Musical 3: Senior Year

Avatar Gear
August 5: Roxy/Quiksilver

DLC
August 10: Red Dead Redemption: Legends and Killers Pack, 800 Microsoft Points
August 10: Dragon Age: Origins: The Golems of Amgarrak, 400 Microsoft Points
August 13: Lips songs from acclaimed composer Andrew Lloyd Webber, 160 Microsoft Points per song

This article was originally published on Joystiq.