ART

Museum Update: The San Diego Museum of Contemporary Art, which has just changed its name to the Museum of Contemporary Art, San Diego, has postponed groundbreaking for expansion until 1993. The museum had planned to break ground in La Jolla this year for an addition, designed by Philadelphia-based architect Robert Venturi. Museum Director Hugh M. Davies attributed the delay primarily to an on-going review process involving a proposed fence for the grounds behind the museum.