Good news, On VSCode, with Pylance and Ruff I have both intellisense and new syntax support.

Meh news, symtax highlighting is fucky for generic functions' return type.

Example:

def add[T](a: T, b: T) -> T:
    return a + b

On my setup the -> is colored red but is supposed to be white, that also happens with only the Python extension, so I'm guessing it will be fixed soon.

Besides that, I'm actually surprised this was hidden under my nose as Ruff was already installed, but Pylint and MyPy both started reporting errors which gave the impression that none of my installed extensions support the new syntax. kind of a rookie mistake on my part not to check every extension's website for updates.

Anyway, thanks for the answer, I'm glad to finally be able to utilize this.