In India yes, I have it installed and running successfully
on my L820. It took hardly 30 minutes for the entire process to complete and afterwards it automatically took all the settings & messages using wifi.
Till now I have only observed the orientation lock & driving mode. About battery performance, will let you know after a couple of days.
I am unable to install Nokia Camera, Nokia Beamer, they still say that they are not available for my device, WTH?? I am also unable to set notifications on glance screen..