Judith Regan says she’s moving her publishing and media group from Manhattan and relocating to Los Angeles. “In doing so, ReganBooks, which is part of HarperCollins, which is in turn owned by Rupert Murdoch’s News Corporation, would be one of the few major book imprints to be based outside Manhattan and one of the first to leave New York for the West Coast. The move could shake up an industry that has long operated in a parochial, Manhattan-centric fashion, even as technology has made the location of a company less important.”