I received an email reply from Sheraton that their new car partner will be Avis starting 2/1/99. However they did not state the number of points offered.
Hotel points have seem to be less affected during the recent cuts by rental car companies. For instance, Avis still offers 300 GP points from Hyatt, and you can still get 1000 Marriott Rewards Points from Hertz. I think one of two reasons are possibly responsible for this:
1) Less people take hotel points, so the rental car companies haven't worried about them yet.
2) It appears that the 7.5% tax that is now applied to ff miles is not applied to hotel miles.