I'll try to test this out and post-back, but I can confirm that the pre-release version supports the app-based push/confirm version of 2FA. Not a guarantee, but

I'll try to test this out and post-back, but I can confirm that the pre-release version supports the app-based push/confirm version of 2FA. Not a guarantee, but I'm assuming that U2F will work seamlessly. I believe there is also some basic support for policies regarding re-authentication, though I'll have to get back on this one too.