They haven't announced free dining for November yet. In the past it typically ended the Thursday or Friday before Thanksgiving. As long as your reservations start before the free dining ends, it will carry over through the end of your stay, even for the days not otherwise included.
We've done this the last four or so Thanksgivings, each year adding the last day of free dining to our stay so we have it until we leave the Friday after Thanksgiving. So its been either a 7 or 8 night stay for Thanksgiving for us with the first night being on the last day of free dining.