While we didn’t get a lot of new information concerning Star Wars: The Rise of Skywalker, they did show some new footage from the final chapter of the Skywalker Saga.
In the new footage, they showed Daisy Ridley’s Rey with a dual red lightsaber similar to Darth Maul’s and is wearing all black hooded cloak.
The information was circulated yesterday by folks in attendance such as Fandom’s Eric Goldman.
— Eric Goldman (@TheEricGoldman) August 24, 2019
This might suggest that Rey may indeed turn to the Darkside or there might be glimpse to a possible timeline where she has. I guess we’ll learn more once Lucasfilm releases the second trailer which will likely give us a better idea of the actual story.
Also, they released a poster with Emperor Palpatine looming in the background possibly as a force ghost as previously rumored by various fan outlets.
SOURCE: D23 EXPO