Starwood has just announced the details of their fall promotion, which is valid for stays from September 1 through December 15, 2013. Through this promotion you earn double base Starpoints on all stays without limit, and an additional 2,500 Starpoints for every five eligible nights you stay, up to 10,000 Starpoints.
Registration hasn’t opened yet, though I’ll post once it does. Registration will be required by October 31, 2013. You can find the full terms & conditions here and list of non-participating properties here.
This is almost identical to Starwood’s “Double Take” summer promotion, which offered double Starpoints plus 500 Starpoints for bookings made through the mobile website. They’re just packaging it a bit differently. Nothing to get excited over or switch bookings over, really, but better than what Hyatt offered this summer (which is only targeted bonus offers).