Almost exactly one week after David Letterman announced his retirement from late-night TV, he and CBS have officially named Stephen Colbert the heir to his Late Show throne.

According to a CBS press release, Colbert has been signed to a five-year deal, effective when Letterman retires from his show in 2015. Colbert'sLate Show premiere date likewise will not be cemented until a timetable is determined for Letterman's exit.

"Simply being a guest on David Letterman's show has been a highlight of my career," Colbert said in the statement. "I never dreamed that I would follow in his footsteps.. now, if you'll excuse me, I have to go grind a gap in my front teeth."