ah ha ha. well we all know that Nokia users are usually not very proactive at updating their phones. OTA updates might change that though. the experience of updating it through their desktop app is frustrating to say the least.
This update is of 235 MB (approx) and after downloading it took merely 5 minutes for new Operating system to be Installed. I doubt why this New Operating System Named " Anna ". Are they also inspired with Anna Hazare
The best thing I found in this Anna OS is the new Avtaar of Browser. Till Now Nokia was using same old Browser of S40 even in S^3, but now they have developed a New browser with all new different look and fast to use.