AT&T dipped into Black Friday deals with word today of its Thanksgiving promo. The cell carrier promises unspecified deals on Friday itself starting from midnight but plans a major promo for each day of the weekend as well as Monday. Saturday will focus exclusively on BlackBerries and will give away the Curve 8310 or Pearl 8110 for free on a smartphone contract. Price drops are also due for the Curve 8320, which will cost $50, and the Curve 8900 at $100.