It always brings joy to our hearts to see a new UMA-compatible device come into the market, and T-Mobile's revised Shadow from HTC certainly fits the bill. In fact, it's being launched today as the very first Windows Mobile device to support HotSpot calls over WiFi, joining BlackBerrys and a handful of dumbphones on the support list. Speaking of HotSpot dumbphones, the stylish 7510 flip is also hitting shelves today with changeable face