The fall foliage is still going, I have noticed a slight fade in the brightness of the leaves over the last 2 or 3 days. The best weekend for fall foliage colors is Columbus Day Weekend (last weekend). The traffic was really bad around the Kancamagus Highway. I talked to many people who said they were in stopped traffic for hours. But there was a lot going on including the Fryeburg Fair in Fryeburg Maine, which is just over the NH border on RT. 302... not far from the Kancamagus and the tourist town on Conway NH.
This weekend shouldn't be as busy. Well, it usually isn't anyway. I would book a hotel in NH asap to make sure. Here are a couple hotels near the Kancamagus Highway: http://www.kancamagushighway.com/accommodations/
Would love to hear your experience after your trip, where are you coming from?