There is no mileage cap on the Citi AA cards (any version) if the customer is an elite level AA flyer (Gold, Plat, EXP). Obviously this cap waiver depends each year on customers retaining elite status.
Citi did use to offer a Platinum VISA without a cap but the card was discontinued and most cardmembers are slowly being converted out of the product to the Platinum WorldCard (MasterCard) which only waives the cap for elites as mentioned above.
------------------
I Love New York -- Viva Espaņa