Star To Anchor CBS Evening News NEW YORK -- "Today" show host Katie Couric announced Wednesday that she is leaving the show and joining CBS. The TV star announced her departure Wednesday morning on what was her 15th anniversary as co-host of the NBC morning program. In a funny, yet teary, exchange with partner Matt Lauer, Couric also confirmed she's going to be taking over as sole anchor of the CBS Evening News. She'll also have a spot on "60 Minutes." "I will miss Matt," Couric said. "Once in a while we get on each other's nerves -- well, he gets on my nerves. But I could not have asked for a more talented partner and friend." Couric's contract with NBC expires at the end of May. Couric, 49, was inducted into the Television Hall of Fame two years ago. She leaves "Today" as the longest-serving anchor in the show's history. The "Today" show has been the number one morning show for an unprecedented 10 years. NBC has not announced Couric's replacement.