Apparently we will not get a director’s cut but we will get deleted scenes on the blu-ray package.
http://www.nme.com/filmandtv/news/j-j-abrams-says-there-will-be-no-extended-director/396947
I think we will also see some 4k/UHD/HDR release at some point too, especially as there was a Dolby Vision master (and from googling around it looks stunning).