"Have now upgraded to Window 10 LTSB build 1607 and Hyper V is fully working." https://community.spiceworks.com/topic/1690823-windows-10-en...
"I just installed WSL on LTSC and it worked great." https://news.ycombinator.com/item?id=18271829
A random Joe says it works <--> Supported and stable configuration.
But you are right HyperV seems to be working as of 1607.
WSL is also supported in LTSC and can be installed with these instructions from Microsoft: https://docs.microsoft.com/en-us/windows/wsl/install-manual