This page lists pre-release builds of IntelliJ IDEA 2018.1, the update we're releasing in Spring of 2018.
Both Community and Ultimate Edition EAP builds can be used for any purpose, including writing proprietary or commercial software. Note, however, that because EAP is always work in progress, some of their features might not always work as expected. Please use these builds at your own risk.
IntelliJ IDEA 2018.1 is in active development, and we really appreciate your feedback. Please use our issue tracker to report bugs and suggest new features and other improvements.