Snoke will be too busy killing Luke after Luke has had to rush off after Rey after she makes a ill-tempered departure from Ahch-To to go and save her friends/take revenge :thumbsup:
In the link above (posted after you were posting) they say no CG will be used.
Agree about the trailer though - maybe it's the lack of Han that's doing it (although I'm sticking by my theory about him returning :) )
Just did and I was entirely wrong (officially, anyway) so excuse me for piquing your interest. Director has stated that the opposite is the case:
http://www.digitalspy.com/movies/star-wars/news/a830090/star-wars-episode-9-director-general-leia-carrie-fisher/
but...
Liked the trailer, apat from what looks strongly like a CG Chewie.Tickets booked :)
edit: I do feel there may be at least an element of misdirection in the trailer though, in the way the scenes have been cut together. Hence maybe the comment about spoilers from the director to aid this...