I noticed today that many of the tours have their 2017 listings up. Some observations:
-Itineraries (at least what I've read so far) are mostly the same. One big change I noticed was that the Eastern France tour ends in Aix instead of Marseilles).
-Most prices are the same or cheaper than 2016.
-Not all the tour dates are up. There seem to only be 1-2 listed so far, and in late summer/early fall for some reason, but nothing's been officially announced yet so I'm sure they will update further soon.