CHICAGO--(BUSINESS WIRE)--Fitch Ratings' credit outlook for the U.S. and EMEA packaged food industry is stable as challenges are balanced with areas of potential improvement in 2015. Food companies will focus on accelerating weak top line and volume growth with product innovation that resonates better with today's time-constrained and increasingly health conscious consumers. Fitch expects modest improvement in the U.S. operating environment based on projected higher GDP growth, lower unemployme