UPDATE 2-Zynga overhauls upper management as CFO departs
November 13, 2012 at 17:32 PM EST
SAN FRANCISCO, Nov 13 (Reuters) - Zynga Inc announced on Tuesday sweeping changes across its upper ranks, including the departure of chief financial officer, David Wehner, as the troubled game publisher sought to revive its business and quell months of management turmoil.