Taylor Swift has her release-week run of shows all set to go. For The Life of a Showgirl , Swift has it all scheduled in a handy itinerary to help everyone keep track: The Release Party of a Showgirl in theaters, a few late-night-show cameos, and … wait … what is “Standby,” written around the 7 p.m. slot on Saturday, October 4? Below, all the theories about Swift’s surprise release, in order of least to most likely.

6. A surprise performance with Sabrina Carpenter?

Fellow showgirl Sabrina Carpenter, who’s featured on the album, is headlining the Austin City Limits festival on Saturday, but a surprise performance at a musical festival sounds like a safety risk for Swift given the huge crowds and the highly anticipated album. The signed CDs were already a fiasco, and that was just on

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