According to the docs (about 3/4 down the “Get Started with Docker” page), you’ll have to turn off ‘experimental mode’ first:
Both Docker for Windows Stable and Edge releases have the experimental version of Docker Engine enabled, described in the Docker Experimental Features README on GitHub.
Experimental features are not appropriate for production environments or workloads. They are meant to be sandbox experiments for new ideas. Some experimental features may become incorporated into upcoming stable releases, but others may be modified or pulled from subsequent Edge releases, and never released on Stable.
On both Edge and Stable releases, you can toggle experimental mode on and off. If you toggle it off, Docker for Windows uses the current generally available release of Docker Engine."
As far as running Linux and Windows containers at the same time: No. I haven’t found official docs on it, but think of this… why would they give you an option to switch between them if you could run them at the same time?
At any rate, this has been asked before, and nobody has mentioned a way to do it.