Yup, Bit.trip presents Runner 2: Future Legend of Rhythm Alien is on its way to the iOS platform. The controls have been rethought from the ground up, and it looks like the entire game is surving the trasition to mobile intact - unlockables and all. Have a look at the trailer for the original release.
I devoured this game on PC back in March and it most likely will feature in my top games of the year. Whether the iOS port can replicate the experience remains to be seen. We should have a launch date and pricing later on in the year.