Symphony in the Stars: A Galactic Spectacular will not be performing nightly starting in May. The current Star Wars fireworks show will be dark on most Tuesdays, Thursdays, and Saturdays. The show is scheduled for Saturday, May 28 which is the final performance on the schedule.
Not having the show, which is scheduled at 945 on performance nights, will allow the park to close at 830 instead of 1000.
Symphony in the Stars is scheduled to be replaced with Star Wars: A Galactic Spectacular which will include projections on the Chinese Theatre and other special effects. That show does not have a start date, but it is listed as beginning in the summer.