Earlier quoted context omitted.
We see similar developments with C# borrowing features from F#, with records in v9, pattern matching, etc. While it's good for C#/Java, it does make it harder to push for adoption for a language such as Scala and F#. Why bother investing in the languages with a much smaller market share when the big boys adopt good bits and pieces from them constantly?
Really sorry to ask the dumb question here, but what is V9? A cursory Google search didn't show me anything about e.g. a major update to the V8 JavaScript engine? UPDATE: Ah, C# v9.0 thank you all.
Parsing that sentence the subject is C# and F# is referenced, but the subject of the sentence didn't change, it remained C# thus logically v9 applies to it.