As an F# MVP, I can tell you MS is committed to the primary functional language on the .NET stack, but more importantly MS has open-sourced F# https://github.com/fsharp/fsharp. The membership of the FSharp Software Foundation http://fsharp.org/ is very active and growing under the informal leadership of Don Syme. F# works today across Linux, iOS, and Android with a community of OSS programmers improving x-platform interop almost on a daily basis.