We get some rumored details on a Star Wars: Episode VIII scene involving Mark Hamill as Luke Skywalker and also a description for Oscar Isaac's Poe Dameron costume.
Previous set images revealed aristocratic-looking characters and aliens, and now the scene is said to take place at a casino. It's said the scene involves lots of different aliens, similar to the cantina scene from A New Hope and The Force Awakens, but on a larger scale. Luke is said to be walking around the casino looking for someone (unknown). Something apparently happens causing an evacuation with the sequence said to involve Laura Dern's character and Oscar Isaac's Poe Dameron, as well as lots of people evacuating into smaller ships.
Regarding the costume of Poe Dameron in Star Wars: Episode VIII, Making Star Wars describes it as a cross between Han Solo and Indiana Jones. It's said to be Poe's Resistance costume (not the X-Wing costume), which is very similar to Poe's Force Awakens look, but with slightly updated color and a new jacket. Poe has a V-cut undershirt that is grayish light blue with a jacket from the "Han Solo Collection," described as a "cafe racer jacket," but not tight fitting. The jacket is said to look like Han Solo's jacket from The Force Awakens, but with a higher collar and the lapels stick out more. There is also a left breast pocket.
"Star Wars: Episode VIII" has a December 16, 2017 release directed by Rian Johnson starring Mark Hamill, Carrie Fisher, Adam Driver, Daisy Ridley, John Boyega, Oscar Isaac, Lupita Nyong’o, Domhnall Gleeson, Anthony Daniels, Gwendoline Christie, Andy Serkis, Benicio Del Toro, Laura Dern and Kelly Marie Tran.
Star Wars: Episode VIII announcement teaser: