Technically there is no new release this week. It appears that Microsoft have decided to not release anything because of the retail releases of Call Of Duty: World At War and Gears Of War 2. Any new game being released this week would be on a suicide run.

Though no PR has been released, Shard over at NeoGAF has discovered that Worms HD, Ultimate Mortal Kombat 3, and the original Fishing Frenzy are now coming up as 400 Microsoft Points on the Xbox.com website. Of the three I would highly suggest Worms HD.

Also it appears that Banjo Kazooie is now available for those who have gotten codes from pre-ordering Banjo Kazooie: Nuts & Bolts. If you've got your code, simply redeem it and you can download it.