Portico launched for the 822 yesterday. Over the next couple weeks, everyone will get a toast notification of the update's availability, but if you go into settings | phone update, and click check for updates, you can get it right away. My install took over an hour, but the download was entirely over the air (but since it is such a large download, you have to be on WiFi). After the download is complete, and it goes on to the next step, you don't have to be on WiFi any longer. After my download was complete, my wife and I went out to eat, and while out, the update finished.