at Developer Day event in Mexico, Nokia inform the next version of Symbian - Carla and Donna. Carla intended Smartphone with Symbian for mobile phones with 1GHz processor or higher to be released late 2012 or early 2013. This Symbian version will offer a new web browser, new widgets, new NFC capability, Dolby Surround enhancement on audio devices.
Therefore the minimum processor requirement means all Symbian devices and Symbian ^ 3 Anna (N8, C6-01, C7, E7, E6, X7-00) will not get this version
Donna destined for Symbian mobile phone with dual-core processors, but AT THE TIME pause this release, most likely we're not see it before the end of 2013 or early 2014.
While Belle Symbian devices will now be updated again later this year while the device is Symbian ^ 3 will get new updates first quarter 2012 will likely be the last update to version 3 and Anna ^.