Today T-mobile officially released the Piano White Blackberry Pearl. There is nothing different between this model and the previous one, simply the white color. Personally, I think that it will end up looking a bit dirty after prolonged use, being that BB users tend to have their phones in their hands more often then typical mobile users.
Either way, it’s the same price and can be purchased today from T-Mobile. Expect to pay $150 with a 2-year service agreement for the device in white (with MyFaves). I have a Pearl, but I don’t see myself running out to go buy one.