In mid-July Citibank points suddenly became transferable to American Airlines. That was a huge surprise and for many cardmembers with Prestige and Premier products a nice increase in the value of their points. Citi hadn’t had one of the large U.S. airlines as a transfer partner.
In fact, it was odd that American Airlines wasn’t a transfer partner before this. And odder still that the relationship was introduced as temporary, running only though November 13.