An official synopsis for Star Wars: The Last Jedi has just teased what fans will see- “age-old mysteries of the Force” amongst other surprises. See synopsis below.
“In Lucasfilm’s Star Wars: The Last Jedi, the Skywalker saga continues as the heroes of The Force Awakens join the galactic legends in an epic adventure that unlocks age-old mysteries of the Force and shocking revelations of the past. Star Wars: The Last Jedi opens in U.S. theaters on December 15, 2017.”
Source: Making Star Wars