I've used Ionic before to build hybrid apps. The performance on iOS and Android (with crosswalk) is really impressive. For creating MVPs, Ionic was crazy fast. What would have took a month or more for native (complex UI), was prototyped in a week. I'm pretty pumped up about this tool.
Likewise, it's already a massive time saver, this new tool can only reduce development cost further. I'd love it if my prototyping tool naturally converted the UI into something I can actually build on - this looks really promising!