What's interesting here is this is gated on the new parser from PEP-617 [1]. Based on mailing list discussions [2], and the PEP, the use of `match` will be context-sensitive, so it shouldn't be as disruptive of an introduction as `async`.

1: https://www.python.org/dev/peps/pep-617/

2: https://lwn.net/Articles/816922/