As of now I don’t see a similar announcement with other programs, though I wouldn’t be surprised to see them get out of the mileage “game” completely.
Don’t forget American is offering 2,500 AAdvantage miles for a new Netflix account through November 14, 2012.
Netflix memberships can be had for as little as $7.99 per month, and you can always sign-up just for the bonus miles and cancel after a month. So you can’t beat a month of Netflix and bonus miles for just $7.99. If you collect United MileagePlus miles it’s also worth noting that they have a potentially better offer of 4,000 MileagePlus miles — 2,000 miles for a new account, and 2,000 miles for paying with your MileagePlus Visa card.