Wyoming travel folks just sent this:
The East Entrance to Yellowstone NP has reopened, and all lodging, campgrounds and amenities are open.
The Columbine Fire burning in East Yellowstone is about 53 miles southwest of Cody and 0% contained. It has burned about 7,000 acres, but is said to be no threat to people using the park. Check here for updates if you're headed that way for an end-of-summer fling.