CBS came under fire after canceling Stephen Colbert's The Late Show - but when does the last episode air? Colbert, 61, took over hosting the Late Show franchise following David Letterman's step back in 2015 and celebrated nearly a decade on the air before shocking viewers with the cancellation news. "Before we start the show I want to let you know something that I found out just last night. Next year will be our last season," Colbert announced during a July taping as the audience booed. "I share your feelings. It's not just the end of our show, but it's the end of The Late Show on CBS.