Esri provides numerous periodicals, which can be subscribed to free of charge by simply going to www.esri.com/subscribe. Here are some examples.

Health & Human Services
Health & Human Services is a newsletter printed quarterly for the health and human services GIS user. The publication features articles describing the function of GIS in public health, workforce development, and health education. Those interested will find techniques for implementing Esri software into their health care work environment.

ArcWatch
ArcWatch is an e-newsletter published monthly for anyone interested in what's new with Esri, its software, and GIS mapping solutions.

Government Matters
Government Matters is a quarterly printed newsletter for those interested in state and local government and its relationship with GIS. It addresses possibilities for more efficient community management using GIS.