I recently got locked out of my machine because logging in with the mandatory Microsoft account-backed primary user of my machine didn't work anymore. It said I was offline and I had to use the "previous password" even though I didn't have a previous password for that account. Hacking around in the recovery console to add another administrator user worked, but then I couldn't reset the original user's password becaus…
So TFA is really "we've spent the last two months monkeying with the crap that no-one asked for or wants, and Update is mildly less annoying". That's not really much of an announcement.