Recently at a demo Harmonix told 1UP that Rock Band Unplugged doesn't interact with the PlayStation 3 console, stating there is no communication between the PSP and PS3 at all.
To quote: There have been a few attempts at interactions between PlayStation 3 and PSP, but it's hardly an industry trend.
Could that change with Rock Band Unplugged, Harmonix and MTV Games' portable take on their band game? Nope.
Despite some ideas we had about the PS3 version of Rock Band or Rock Band 2 sharing sharing downloadable content or unlocking features for Rock Band Unplugged on PSP, Harmonix told 1UP at a demo last week that's not the case and there's no interaction between the two platforms.
Maybe that could change with future iterations, though.
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