Thinking ahead...

A lot of work has gone into writing these PEPs...  we should see how much we can easily convert into actual docs. It seems to me:

- Parts of PEP 634 and PEP 635 can be worked into the language reference.

- Guido's overview (the appendix of PEP 636) can probably just be dropped verbatim into the What's New for 3.10.

- The rest of PEP 636 can just be lifted into the docs as a proper tutorial and linked to from the What's New.

Also, we need to document the stdlib changes (ast, collections, dataclasses, keyword, ...). The dis module docs are already part of the implementation.