Article continues below advertisementCBS is officially turning the page on one of late night's most recognizable franchises in a way few saw coming.Following the May 21 finale of The Late Show With Stephen Colbert, the network will hand over its coveted 11:35 p.m. time slot to media mogul Byron Allen, who will fill the hour with back-to-back episodes of his long-running series Comics Unleashed. The move, first reported by Variety, marks a fundamental shift in how CBS approaches late-night programming.