NBC's announcement of all (minus an expected re-run of Dolly's second Christmas special) holiday programming has allowed local stations to sell spots in programming that, hopefully, has avoided the repugnant election effect.
Last week, ABC did the same, giving local stations a chance to sell spots in the broadcast premiere of "Frozen" several weeks in advance. CW released their own classics in mid-October.
Fox throws a great New Years Eve special, but in general, they're light on Christmas.
Reps for CBS stations typically are told the first week of November the schedule for their holiday specials, but as yet there is no announcement of programs, dates or times.