Most Marriott hotels only have a couple room types, excluding suites, and, again, IME, those that had multiple room types already had this policy in writing. Those properties were, IME, vacation destination properties.

Examples:

• Atlanta Marriott Marquis: Non-suite room types for a 7/1 reservation are Guest room and Concierge level. No change
• Eden Roc: The three room types for the same night, at different rates are Guest room, Partial ocean view and Ocean view. My previous reservations here have indicated I could only get a one type UG, but, in fact, I was given an Ocean view room at the Guest room rate. IMO, no change.
• JW Ko Olina: Mountain or Golf view, Ocean view, Deluxe Ocean view. I paid for the least room and was UG to Ocean view. The one room type UG was clear to me before going, and I remember thinking about paying the extra for the Ocean view to get the Deluxe, but read on the Web that the Ocean view was very nice. IME, no change.
• NY Marquis: Guest room, times Square guest room, Executive king larger guest room and CL guest room. IME, I've sometimes leapfrogged to the CL level, and other times to the Executive king. I've declined the Times Square option and mostly had a regular room. In other words, the same as it appears with the "new" language.

It just doesn't seem to be that big a change from what most properties have already been doing.