According to the rumor, the film ended with a confrontation between Rey and Kylo in the Solo family home, concluding with, of course, Ben Solo’s redemption. Other details involved Leia dying, but not before getting a lightsaber; red stormtroopers and the First Order erasing memories and brainwashing people. These rumors were so wild that Colin Trevorrow actually spoke up, refuting that any of this was in the script that he and Derek Connolly wrote.
Article source: https://www.cinemablend.com/news/2486169/what-if-colin-trevorrow-had-directed-star-wars-episode-ix