Just curious about Orleans. I remember reading about it as Erlang inspired MS language. Do you happen to know about adoption in the industry?
Orleans is a .NET framework for distributed applications, no language at all.
As for industry adoption, it is used by some game studios, for example,
http://www.odbms.org/blog/2016/02/orleans-the-technology-beh...
https://www.gamasutra.com/blogs/AshkanSaeediMazdeh/20170209/...
I have learned Erlang, and like its Prolog inspired syntax, but that is all about it, there is hardly a place for it on the Java/.NET/C++ shops I work on.
Akka, Orleans, HPX, OpenMP have much more uptake.