A new Rock Band game is in development for PSP.
The news was just announced at the Destination PlayStation event in the US, as reported by Videogaming247.
Apparently it'll be titled Rock Band Unplugged and will have Wi-Fi functionality. That includes an in-game shop selling downloadable content, which has never featured before in a PSP game.
Rock Band Unplugged has been confirmed for both the US and Europe, though there's no word on a release date as yet.