Be sure to check out
this dining-specific post in the
Disneyland at Christmas/Holiday Season Superthread (we cover the whole holiday season there, not only Christmas), as there is a special "Thanksgiving Day Dining" section. In that section you will find a link to a Disney Parks Blog from November 14th of last year, and Pam Brandon gives a list of 10 options for Thanksgiving food.
What you should know is that the options are not going to change too drastically from year to year. All of the same table service/sit down restaurants that had special menus or meals for Thanksgiving last year will likely have special menus or meals this year. Maybe a few of the items on the menus may change, and I'm sure the prices will have gone up a bit, but in general you will be dealing with the same set of restaurants and the same types of items.
I could be wrong, but I think that Carnation Café might have a special menu or meal on Thanksgiving as well, though I don't think Pam Brandon included it in her blog from last year.
And, as I mentioned in the Thanksgiving post I linked above, both Ralph Brennan's Jazz Kitchen and Catal in Downtown Disney offer special meals on Thanksgiving.
Today in the Superthread, both Trish/Phoenixrising and Lori/Kylie71 spoke of their previous Thanksgiving meals (at the Blue Bayou and Storytellers, respectively).

albertamom -- I don't
think that the hotels are
truly, actually booked yet (although I expect Veterans Day weekend to be quite busy, especially since the Christmas Fantasy Parade taping will take place on at least a couple of days during your trip)-- I know that they show up as being booked for most of November and most of December, both online and to the Cast Members on the phone (and they show up as booked for most of the current discounts too), but this sort of thing has happened in the past, where rooms appeared to be booked up and then suddenly there was availability as time marched on.
Believe it or not, September is actually early for so many onsite hotel rooms at Disneyland Resort to really be all booked up in November and December -- especially when so many people stay off-property and especially when there is nothing major or out of the ordinary happening this year to bring a bunch of extra people to the parks (like the opening of Cars Land). It wouldn't be too early for WDW hotel rooms to book up, but for DLR I think it is. In my experience I have noticed that rooms start to open up over time. I think that some of the rooms might be held back right now (except for the most expensive ones), for some reason or another -- and then we will begin to see some openings by sometime next month. I could be completely wrong, but I am going by what I have noticed in the past, as I kept watch over the hotel calendars when there were certain discounts floating around.