Update 12/13/12: Today is the last day to apply for these official 50k offers!
I noticed a new offer on citi.com today for 50k AA cards. This is perhaps not as good as the 50k offers that appear without landing pages, as those credit the bonus points all at once, but better than the usual 30-40k official offers. With this offer you get 40k points with the initial minimum spend and then 10k more with an additional spend requirement, making this almost like a retention bonus. I'm still happy to see it, though.
"Earn 40,000 bonus miles after making $3,000 in purchaess in the first 3 months, and additional 10,000 AAdvantage bonus miles after $10,000 in purchases in the first 12 months of cardmembership."
If you met both requirements for two-stage bonus points, you'd end up with 63,000 AAdvantage miles, not a bad haul. That's 50,000 bonus miles plus the one mile per dollar you'd earn on $13,000 in spending (unless you earned a greater multiple by making some purchases from AA).
Here is a link to the landing page that goes to both offers.
MommyPoints has a good overview of the AA card offerings here: