Best Buy has the PSPgo listed on its website and it says that handheld will come with a voucher to download Rock Band Unplugged.
You can get it, apparently, in Pearl White or Piano Black.
No confirmation from Sony, but Best Buy has it listed anyway.
More over on D’toid.
Sometimes we include links to online retail stores. If you click on one and make a purchase we may receive a small commission. For more information, go here.