The prominent features of Enlightenment 0.20 include full Wayland support, new screen management infrastructure and dialogs, new audio mixer infrastructure, internal widgets being replaced with Elementary, improved FreeBSD support, and a new Geolocation module.
With Enlightenment 0.20, the Wayland support should be in good shape. Samsung developers had dropped Wayland support from E19 after the big re-work for E20. The support should be in very good shape and from my understanding basically on par with GNOME's current level of Wayland support.
This full Wayland support comes three years since the release of Wayland 1.0 and all signs indicating that 2016 could be "the year of the Wayland Linux desktop", ignoring Ubuntu of course.
More details on today's Enlightenment 0.20 release can be found via Enlightenment.org.