Only semi-credible info I could find on the trailer, via a post in TheForce.net forums...
https://www.facebook.com/FullOfSith/posts/532017766956810
If so, that coincides roughly with a date I've been mentioning for a while now: October 16 - the same day
Bridge of Spies of hits theaters, which is a project from DreamWorks, who currently has a distribution deal with - you guessed it - Disney. That, and Spielberg, Hanks, and
Star Wars just kind of seem to go together. So, my guess would be an online trailer release on Thursday, October 15, set to coincide with pre-sale ticket announcement officially confirming that tickets will sale go on the Monday the 19th.