In advance of Wednesday night’s Season 4 premiere (9:30 p.m. ET on ABC ... Now, Halpern and Schumacker confirm that the entire “It’s Always Sunny in Philadelphia” cast will appear ...

“Abbott Elementary” set a January premiere date for its crossover with “It’s Always ... ‘Sunny’ is in their upcoming 17th season,” Schumacker said days before the Season 4 premiere ...