This is weird. Upgraded automatically from 2.8.2 to 2.8.4. Clicked to start. status bar at bottom left of browser said "waiting for polizeros.com" and nothing else happened for a couple of minutes. So, I figured something got hung, and clicked to another menu option in Admin.
To my surprise, I noticed the upgrade notice was gone and the dashboard said it was version 2.8.4.
This is the first autoupgrade I've done. Does it normally just wait on the upgrade screen with no prompts or updates on what's heppening