Windows 10 Desktop build 16237 offer new improvements for Hyper-V.
You will see a new virtual machine gallery under quick create. There isn't anything in the gallery yet and we'll have more details on this in the future. In the meantime, choosing "Local installation source" will allow you to pick an image from your computer.
Additionally, options for VM Name and networking are in the "More options" section which introduces another new feature in Hyper-V. Hyper-V on Windows 10 provides a default network so your virtual machines share networking with your computer using NAT.
You can find more information for Bug fixes and Known issues on the blog.
