The character was believed to be attending NYADA with Rachel (Lea Michele) following the announcement that next season will split its time between their adventures in the Big Apple and McKinley High, but Kurt was rejected from the academy in May's finale.
Speaking at the Critics' Choice Television Awards, Colfer confirmed that Kurt will instead travel to New York to work alongside the unknown character played by guest star Sarah Jessica Parker.
"He will find himself in an establishment where Sarah Jessica Parker is his manager of sorts, but not in a performance sense," he told TV Guide.
Colfer also said that he expects Kurt to give Rachel a makeover once she arrives on Broadway.
"Lea's a hot girl, [but] Rachel could lose the baby-doll dresses," he teased.
Colfer previously stated that Kurt will be "back full-force" for Glee's new episodes.