It is important to distinguish EAP from pre-release software. Please note that the quality of EAP versions may at times be far below even usual beta standards.
EAP Download page
EAP program was closed. You can download currently available MPS EAP builds from JetBrains MPS 2017.2 EAP Download Pageget all information about latest MPS 2017.3 release builds from the Download MPS 2017.3 page.