Although none too surprising, it looks like Microsoft's gearing up to release at least one new Zune model this year, according to company man Brian Seitz via his Twitter account. Of course, with Ballmer telling an audience last month they're "sustaining our investment" on the product, we're gonna temper our excitement a bit until Redmond shows off the goods, which hopefully won't be long now that the PMP cat's out of the bag.Filed under: Portable Audio, Portable Video