Star Wars: A Galactic Spectacular will return to the skies above Disney’s Hollywood Studios just in time for the release fo Star Wars: The Last Jedi on December 15th, 2017.
During this period through December 31st, “Jingle Bell, Jingle BAM” will be performed first every evening, followed a few hours later by Star Wars: A Galactic Spectacular. Just Star Wars: A Galactic Spectacular will be performed nightly beginning 1/1/18.
Additions to the show based on The Last Jedi are expected, but may not debut until the December 17th public showing, as they are slated to debut first at Star Wars Galactic Nights on the 16th.
Similarly, a Rogue One scene was added to the show earlier this year: