Speculation on the start date of an unconfirmed rumor? I'd say, if you haven't seen this by May 1, don't keep holding your breath.

Citi/AA may be playing around with the terms of their co-branded cards in an attempt to strengthen those benefits to keep people opening those cards, but for a lot of folks, I'm not sure why they'd take an AA card if the TYP card can get them miles, especially a lot more miles with their bonus categories. And, I suspect AA's figured out exactly the same thing, which is why, if this is happening, it's taking so long to happen.

And, other than the reports of several people, who did not have TYP cards at the time of their conversations with CSRs, about this potential, there's nothing to support it.

I don't think I'd be building my card opening strategy around this rumor until we see some more confirmation. It may be a great card for many reasons (and thanks to Happy and others for pointing those reasons out), but if I take this card, it won't be because of the potential transferability of points to AA miles. That'll just be icing on the cake if it occurs.