Gaijin Games has put out some proper release dates for the various versions of Bit.Trip Presents Runner2: Future Legend of Rhythm Alien. Up first are Wii U and Steam (Windows, Mac, and Linux), with those launches happening today, followed by Xbox Live Arcade on February 27.
Unfortunately, Runner2 won't make it to PlayStation Network until March 5 at the earliest, and PS Vita and iOS in the summer. Last I was actively following the game, the art style hadn't fully materialized, and Jonathan Holmes was talking about it using words that appeared to be written in English, but felt foreign and nonsensical. Some things never change.
While we're on the subject, it's not too late to pre-purchase the game on Steam for a discount and extras, like Bit.Trip Runner and sneakers for the Scout and Demoman in Team Fortress 2. It still feels unusual to see the series on non-Nintendo platforms, even all these years later. Which version are you looking at, if any?