Rock Band Unplugged, the out-of-nowhere PSP port of the wildly successful Rock Band series, now has an official release date: June 9.
Unplugged is unsurprisingly planned as an exclusive for Sony’s portable, and will feature 40 master recordings, according to a press release issued by RB distribution partner Electronic Arts.
It will also include "the first fully-featured in-game store for downloadable content on the PSP system" — a system that utilizes the PSP’s wireless internet capabilities and allows you to use your existing PlayStation Network account to purchase tunes.