Nokia has started issuing a new version of the global Belle Refresh the operating system Symbian . Owners of Nokia N8 ,  Nokia E7 ,  Nokia X7,  Nokia C6-01 ,  Nokia C7 , Nokia Oro can check the availability of firmware via software update.

Refresh Symbian Belle brings new, interesting features, including a new browser with improved support to ‘ HTML5 , a number of new widgets to the homescreen and applications Microsoft Office Mobileand Nokia Maps Suite 2.0 . Like most of the updates, This also comes on the first device sold Opern market. For smartphones “branded” will have to wait a few more weeks to allow for approval.
Source