Using New Outlook on Windows for professional communication and productivity
I bought and installed Office Pro 2019 two days ago and the 0w is the default, it seems.
Because it's a fresh install, downloaded during the install, there are no updates to be done.
Of note, I had had OneNote 2019 installed and that blocked me from installing so I had to run the SARA uninstaller to remove all traces of 2019 from my system and then install it all fresh so no pre-existing issues should have been present.