Having Android APKs work unmodified (minus Google APIs) is pretty neat, but has been done before (BB, Jola).
The real interesting part is the the Objective-C toolchain. Seems like they have an emulation layer for UIKit, Foundation and other frameworks. Probably hard for them to keep up with changes and I expect a lot of growing pains for early adopters.
Great news overall, I can finally add a proper Windows Phone/10 target for libGDX. Makes RoboVM more versatile as well :D