And still, the previous update hasn't been rolled to all Lumia 800's. This thanks to Nokia keeping with the idiotic product codes, which were already obnoxious with symbian. If you have the "wrong" product code, you won't get any updates. I am still waiting for the previous one, and the battery life is crap. Sometimes it lasts more than one day, sometimes not even half, and I have no idea why it burns battery so fast.
To add insult to injury, the product codes crap in WP7 is even worst than symbian, as the damn phones are locked so tight that you still can't change the product code to a better supported one.
Of course, in the end, it is a lot worst than android - there if you need an update and the manufacturer hasn't released it yet, you can always install a community released ROM. With WP (or any other proprietary system) you're well and truly stuffed!