News: In America on February 8th, Europe on the 9th.
If you subscribe to PlayStation Plus and you're a fan of Russian stacking dolls, adventure games, or Double Fine, consider yourself in luck, because you're getting Stacking free of charge according to the PlayStation blog.
Double Fine's most recent game, and their second downloadable title after Costume Quest, follows Charlie Blackmore, the world's smallest Russian stacking doll, as he uses his ability to climb inside of and control other dolls to solve puzzles, cause mischief, and rescue his family.
The game is out on the PS3 in North America on the 8th, with a European release the 9th. Xbox 360 users will need to wait until February 9th as well. If you don't subscribe to PlayStation Plus, then you'll just have to pay $14.99 or 1200 Microsoft Points to start stacking those dolls.
source: Playstation Blog