Sega's new Hatsune Miku project is apparently Project Diva Ver 2.5. Sega had launched a teaser site just a couple of days ago, teasing a new project featuring the popular Vocaloid, with a reveal slated for April 28.
Not a lot of details have been spilled for the moment, but Japanese magazine Famitsu has Project Diva Ver 2.5 listed for PSP. More details should be released soon, once the latest issue of the magazine hits the streets.
That's a bit of a let down for those expecting a full-fledged PS3 Project Diva game. The paid HD add-ons will have to do for now.