So many changes coming to late night TV lately...well, here's one more.

David Letterman has announced that he will be retiring in the year 2015.  He says his first phone call was the CBS head honcho, Les Moonves to break the news to him.  New York Daily News quoted him saying, "Leslie, it's been great, you've been great, and the network has been great, but I'm retiring."  Moonves responded saying "it's going to be tough to say goodbye."

"Leslie, it's been great, you've been great, and the network has been great, but I'm retiring."

By the time David Letterman signs off for the final time, he'll have been the host of the 'Late Show' for 22 years.

Letterman is expected to make the announce about his retirement on his show tonight.

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