From an AP report:
Dan Rather, embattled anchor of the "CBS Evening News," announced today that he will step down in March, on the 24th anniversary of taking over the job from Walter Cronkite. The veteran anchor has been under fire in recent months for his role in a "60 Minutes Wednesday" story that questioned President Bush's service in the National Guard, which turned out to based on allegedly forged documents.
Rather, 73, said he will continue to work for CBS, as a correspondent for both editions of "60 Minutes." He made no mention of the National Guard story in announcing the change, saying he had agreed with CBS executives last summer that after the Nov. 2 election would be the right time to leave.