The current Nokia N8 devices shipping at the moment, are pre-installed with SymbianBelle with China to receive them first, followed by the rest of the world. Many users that have tried the unofficial leaked version of Symbian Belle, are mentioning that you are able to reverse to the original OS but no such proof has been seen.The official Nokia Blog, Conversations by Nokia has mentioned that February 2012 will present the existing Nokia N8 users with Symbian Belle for their devices which shall also be available via OTA, the same way that Anna was/is available.
Some of the features include more home screens, from the current 3 with Anna to 6 with Belle. Although some Belle devices at this moment are equipped with NFC, it doesn’t mean that if you have Belle on your device that you will also have NFC because, NFC works with a built-in component and a type of application.
The icons are also round and look more lively, you can also switch off your Nokia N8 with a click of the icon. One of the screenshots of the software shows that the Nokia Browser shall be integrated but since the software may still be under improvements, we can’t be certain that it will be included.