I've been to Ricketts Glen a few times - love it. I've been trying to see if I can swing that weekend. If I can, it'll be with the rest of the family for the weekend. Checking our "regular" B&B for availability now.
I'm in "downstate" PA, and things look pretty much the same after Irene as they did before. Weather is a bit cooler, so it's possible that it will advance the change in colors - but I wouldn't worry about it. Even if we miss the color in Ricketts Glen, the falls are beautiful.