Xbox front man Major Nelson has updated everyone with the latest release schedule for Xbox LIVE Marketplace, just so that we know about all of the upcoming content set to hit the service in the next two weeks.

This schedule includes special price offers on all kinds of game add-ons, a heads-up on downloadable content for Alan Wake, Skate 3 and Super Street Fighter IV, as well as new Games on Demand games, while reminding us about the start of the Xbox LIVE Arcade ‘Summer of Arcade’ promotion, which kicks off tomorrow with the atmospheric adventure platform game, Limbo.

Check out the full list of new content set to hit Xbox LIVE Marketplace over the next two weeks, hereunder:

Summer of Arcade XBLA Promotion

• July 21: Limbo, 1200 MS Points

Xbox LIVE Deal of the Week

• Borderlands Add-Ons (Week of July 26)
  • Secret Armory, 400 Microsoft Points
  • Zombie Island, 400 Microsoft Points
  • The Underdome, 400 Microsoft Points
• Forza 3 Cars And Track Packs (Week of August 2)
  • AutoWeek Car Show Pack, 240 Microsoft Points
  • Hot Holidays Car Pack, 240 Microsoft Points
  • Jalopnik Car Pack, 240 Microsoft Points
  • Nürburgring GP Track Pack, 240 Microsoft Points
  • The Road & Track Car Pack, 240 Microsoft Points

(Available to Xbox LIVE Gold members only.)

Xbox LIVE Games on Demand

• July 27: The Lord of the Rings: Conquest
• July 27: WWE SmackDown vs. Raw 2008
• July 27: WWE SmackDown vs. Raw 2009

Xbox Avatar Marketplace

• July 22: Dragon Age: Origins
• July 23: Halo: Reach

Xbox Game Add-Ons

• July 27: Alan Wake: The Signal, 560 Microsoft Points (If you purchased a new copy of Alan Wake, don’t forget to check your game case for a token card to download this debut Add-on at no cost, only on Xbox LIVE)
• July 27: Skate 3 After Dark Pack 400 Microsoft Points
• July 27: Super Street Fighter IV Costumes Pack, 1200 Microsoft Points

Source: Major Nelson’s Blog