2013 Marriott Rewards Hotel Category Changes List
Above is a link to the thread. Nice PDF provided.
BUT WOW! 1/3 of the properties going up in category. Including a new category 9 covering most of Paris and London. Tons of cat 4 props going to 5 and 5's going to 6. Very FEW decreases. Make your 2013 reservations now and start saving points! The value of points just went down a bit.