September 17th was the day it was alleged to be retailing but that's slipped. Rumblings suggest October now. It's for Xbox 360, PS3 and PC.
Retailerhas it for October 29th as does HMV. is a lot more pessimistic with March 18th 2011 while Amazon and GAME haven't bothered to slap a date on their product pages. Developer Reality Pump has made a lot of promises for Two Worlds II.