Sony's odd, dual-screened, folding Tablet P is finally getting a "4G" version here the US, courtesy of AT&T. In this case, those 4G speeds are being "delivered" by an HSPA+ radio, a fact that carrier managed to bury in the PR. The Honeycomb device will be bringing its unique set of 5.5-inch screens to Ma Bell starting March 4th for the rather steep price of $400 with a two year contract. If you don't want to sign your soul over you can pick one up unsubsidized for $550, which is still quite a bit less than the cost of importing one of its 500 UK siblings. Check out the complete announcement after the break.