Do not know if this is new, but just received a card in the mail for Rewards Plus Gold card. "Pay your wireless phone bill automatically with you RPG card and earn double points with every payment"
Includes ATT, Cingular, Nextel, Sprint, T-mobile and Verizon.
www.americanexpress.com/automaticbill. Went to site and it does not mention double points, but this does not appear to be a targeted promo.
At about $500 a month in cell charges this appears to be pretty good offer for me.