Warner Bros. has announced that Guardians of Middle-Earth will be released on December 4 for Xbox Live Arcade and PlayStation Network.
Those dates are for North America as Europe gets the game on December 5.
There's also a retail version, but only for PS3, which is available from December 7. While the XBLA version costs 1200 MS Points and the PSN version £11.99, the PS3 retail version is a bit more expensive with a £24.99 price tag.
This is due to several pieces of extra content like access to discounted DLC (maps, gameplay modes and extra characters based on characters from the upcoming movie, The Hobbit: An Unexpected Journey), a PSN voucher worth £24.99 and a Season Pass.