Nuxeo 5.2.M3 and Nuxeo WebEngine 1.0.RC have just been released!
Please follow the link above for the full announcement, download URLs, and release notes.
Work is still going on for finishing Nuxeo 5.2 before the end of this year. The Nuxeo Developer Day on Dec. 1st will be an opportunity to discuss the new features and the roadmap. You are free to join as there a few more available seats.