What’s Sega’s New Hatsune Miku Project?

Sega have put up a teaser website pertaining to a new Hatsune Miku “project,” that they say will kick off on April 28th in Japan. It’s unclear as to just what form this project will take, but we’ll probably learn more this week.

For a while now, Sega have been updating Hatsune Miku: Project Diva 2nd on the PSP with new content via downloadable updates. Recently, they also showed off a video of a pricey arcade controller manufactured by Hori for Dreamy Theater 2nd, their PSP-to-PS3 conversion software.