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

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.