President Carter will apparently see some of "Roots," after all.

The President told an Atlanta reporter last week he couldn't comment on the precedent-shattering ABC series, which broke all viewing records between Jan. 23 and 30, because he hadn't seen any of the 12 hours of the program.

Since he had been in office only three days when it began, the oversight was understandable.

This week a White House aide obtained "a few hours" of the eight-part saga of the American black experience for presidential viewing.

A White House spokesman said yesterday Mr. Carter hopes to see some of "Roots" in the "near future." But he scotched a report in "Variety" that the President would have any particular comment on the program once he has seen it.

Which doesn't mean some reporter won't ask himabout it, however.

Channel 9 has decided not to renew Klaus Wagner's contract, which is due to expire March 3.

The weekend sportscaster, who came here from Cleveland, will continue on the air for WTOP through February, however.

News director Jim Snyder said yesterday he probably will have a replacement lined up early next week.

And he denied reports that the Wagner departure signaled a WTOP move to bring Warner Wolf back from ABC-TV in New York.

At least one such denial a week about Wolf's return is now part of Snyder's regular schedule.

The President of ABC Television tried yesterday to end speculation about Barbara Walters' future at ABC by issuing a statement in which he said the network looks forward "to a continuing an dlong-term relationship" with Walters.

Frederick S. Pierce, the top man at ABC Television, cited modest gains in audience for the "ABC Evening News" since Walters joined Harry Reasoner as co-anchor, particularly among adults under 50, which is considered the most desirable audience group.

In answer to speculation that Walters would leave the evening news spot, Pierce said. "Barbara Walters, who appears to be the target of much of the recent publicity, will continue on the 'ABC Evening News' with Harry Reasoner. In addition, we are pleased at the public's reaction to Ms. Walters' prime time specials. We look forward to a continuing and long-term relationship with Barbara Walters."