The holiday season will officially kick off at Walt Disney World on November 11, so the new Cosmic Rewind playlist will likely launch that day.
Disney didn’t announce any specific songs. This is what they wrote on Parks Blog:
“This season, the Guardians will trade in their classic hits playlist for a mash-up of seasonal jams at Guardians of the Galaxy: Cosmic Rewind at EPCOT. Guests will blast off to the tune of an awesome holiday single, bringing joy to Xandar and Terra, too.”