Star Wars Battlefront: Renegade Squadron preview at Gamespy.

"The previous Star Wars Battlefront game for PSP sold darn well. That would explain why LucasArts is making this sequel exclusively for Sony's portable system. So sure of this game's impending success are LucasArts and Sony that the two have teamed up to create a limited edition bundle that includes an exclusive white version of the new, enhanced PSP (with an image of Darth Vader on the back) and a copy of the game. We were recently invited to visit LucasArts to experience the multiplayer portion of the game (and yeah, they had the Vader PSPs there)."

Full Source: Gamespy