Germain Lussier from iO9 has tweeted that two shots of Rey using a lightsaber were in a Disney sizzle reel at this year's CinemaCon...
Germain tweeted the following -
MakingStarWars.net went on to add that the shots look like it "wasn't too far away from where she meets Luke" in The Force Awakens. Its unclear if that means location wise or timeline wise.
The image at the head of this post is from the recent fan made trailer for The Last Jedi
This might be the start of the flow of footage from The Last Jedi, which i find quite exciting following what has been a painful quiet period in the Star Wars news cycle.
Thank you for reading,