I'm in the same boat with the rest of you.
Hoping to go one of the first 3 weeks after Thanksgiving (the last 2 years, I noticed FD was the first and third week after Thanksgiving, wonder if it will be the same this year).
Originally, we were hoping for a really good room discount becuase we're thinking about the Poly. But then, we decided to invite my parents. This puts us at 4 Disney adults and 1 Disney child. Assuming we all stay in the same room,
free dining (which we'd upgrade to deluxe) will likely be the better deal (a 40% room discount would be close, but I see that as less likely than FD).
It would be great if they'd announce the FD dates (as well as all other possible discounts) before the 180 day ADR mark (it would be nice for booking flights as well). If this doesn't happen, I'll probably just make a 2 week reservation, make ADRs for both weeks once the 180 day window hits, and then, once FD is announced, cancel dates (and ADRs) as necessary.