Walt Disney Imagineering has announced that a new "adventure" will be added to Star Tours to celebrate Star Wars Episode VIII:

Quote Originally Posted by Disney Parks & Resorts
During a D23: Destination D presentation today, Walt Disney Parks & Resorts Chairman Bob Chapek also shared that for the first time we are adding a new adventure to the Star Tours the Adventure Continues attraction. Walt Disney Imagineering and Lucasfilm teams are currently in production to add an exciting new mission to the attraction based on elements from Star Wars Episode VIII.
It is implied that these additions will be more expansive than the characters & sequences added for Episode VII. Although no specific date was announced, it can be expected to be near the December 15, 2017 theatrical release of the film.