GameStop has added a new image to the pre-order page for Star Wars: Battlefront II that showcases Rey and Kylo Ren's Star Wars: The Last Jedi costumes available in Battlefront II. One thing to note here is that the image actually shows production stills from the movie rather than in-game pictures: 

I don't see much a difference in Kylo's costume compared to his attire in The Force Awakens, but I can definitely see a throwback to Anakin Skywalker's darker robes in Rey's costume. As previously detailed, these particular skins will be available exclusively to those who either pre-order the game or purchase the Deluxe Edition. 

Additional pre-order content includes:

• 1 epic ability modifier that upgrades Millennium Falcon to the Star Wars: The Last Jedi Millennium Falcon with updated sounds and look. 
• 2 epic ability modifiers for Rey that allow you to control the minds of your enemies and create confusion on the battleground. 
• 2 epic ability modifiers for Kylo Ren that allow you to freeze and pull opponents as you use the Force. 
• 1 epic ability modifier for a new First Order hero ship.
• Up to three day early access to the game.

Battlefront II will be available on Xbox One, PS4, and PC on November 17, 2017. 

Source: IGN