06 Jan 2016 --- The SUBWAY submarine sandwich shops have been announcing numerous menu improvements over the past few years as part of in its journey to make its menu even better. The brand has reiterated its commitment to serve only eggs from cage-free layer hens across its 30,000 North American locations. The transition to cage-free eggs has already begun in select markets in the U.S. and Canada and will be completed across its 30,000 North American locations by 2025.