Diane Sawyer has landed the first interview with Mel Gibson since his DUI arrest last July during which he made several anti-Semitic remarks. ABC said Thursday that the interview has already been taped and will air on Oct. 12 and 13 on the network's Good Morning America. Conspicuously absent from the ABC news release was any mention of a primetime airing of the interview. In previous years it would have routinely appeared on Sawyer's Primetime news magazine. However, the long-running program was removed from the network's regular schedule by ABC programmers, who nevertheless said that it would continue to turn out as many shows this year as last, airing them as specials or to fill in for failed shows.