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*(Via The Hollywood Reporter) – After more than 20 years at CBS, David Letterman will announce his retirement as host of the network’s Late Show during Thursday night’s broadcast.

His final show will come in 2015, when his current contract expires. Word of Letterman’s departure first surfaced when REM’s Mike Mills, one of the show’s guests, announced the news on Twitter.

“The man who owns this network, Leslie Moonves, he and I have had a relationship for years and years and years, and we have had this conversation in the past, and we agreed that we would work together on this circumstance and the timing of this circumstance. And I phoned him just before the program, and I said ‘Leslie, it’s been great, you’ve been great, and the network has been great, but I’m retiring,’” Letterman told his studio audience during Thursday’s Late Show taping.

Get the rest of this story at the Hollywood Reporter.

Watch Letterman make the announcement: