This latest rumor claims that production begins in April 2017, with filming taking place in London, most likely at Pinewood Studios, where Star Wars: The Force Awakens, Rogue One: A Star Wars Story and Star Wars: Episode 8 were all shot.
Director J.J. Abrams shot Star Wars: The Force Awakens on 35mm film, with Rian Johnson also shooting Star Wars: Episode VIII on 35mm film as well.
It’s also possible that the studio may change it to a December 2019 date, to fall in line with the release dates of Star Wars: The Force Awakens (December 18, 2016), Rogue One: A Star Wars Story (December 16, 2016) and Star Wars: Episode VIII (December 15, 2017).
Shooting on 65mm will allow Colin Trevorrow to expand the visual scope of his film, which could make Star Wars: Episode IX the biggrst Star Wars movie, in more ways than one.