Retail is continuing to evolve, with technology and consumer behavior working in tandem to fuel change. Far from over, M&A in the sector may have only just begun. In our annual look at the retail sector, Mergers & Acquisitions interviewed several dealmakers about the latest trends, including: Swander Pace’s Robert Vassel; Solomon Partners’ Cathy Leonhardt; Duff & PhelpsJosh Benn; and Carl Marks’ Warren Feder.