I'm going to apologize up front here for sounding sketchy as f**k here but the information I was given yesterday wasn't a case of "this is when the trailer is coming out", it was a "here's what I can give you, you figure the rest out.
"
That info also covered Apes and with the Apes trailer coming today and what I have to hand, I think I can safely infer we're not seeing the Covenant trailer until Christmas Eve/Christmas Day depending on your timezone.
Which also makes me think it's not going to be attached to Assassin's Creed.
Would happily be wrong though but that's where I'm leaning towards at the minute.