If I read correctly, docker for Mac is run on top on another visualization (xhyve, not VirtualBox) and docker for windows run on top of Hyper-V, which mean that it is not for production workload (at least for Windows).
So you can only use it for development. And it is close sourced. hmmm...
This announcement is about a beta for native apps on Mac and Windows. The idea is to allow you to work with Linux containers on your development machine of choice. The images/containers you build there are just as deployable elsewhere — i.e. production — as they were before (when people had to use docker-machine, Virtual Box, etc).
So you can only use it for development. And it is close sourced. hmmm...