And now that I have updated os.fspath() I realize that Ethan said he was going to implement the update. :( If you started on the work, Ethan, I'm really sorry for duplicating your (potential) work.

I'm going to commit Dusty's glossary term next and then go through and update the docs to use it. At that point that will leave updating os.path as the last explicit step in PEP 519 that needs to be short of updating "What's New". We're getting there. :)