Symbian Belle arriving on older Symbian devices in early-2012
Owners of the Nokia N8, E7, X7, C6-01, C7, Oro, E6, and 500 will have to wait a bit longer for the Symbian Belle update because as it turns out, you won't be getting it any time this year.
According to All About Symbian, Nokia said that these devices will be treated to Symbian Belle sometime in early-2012. Earlier it was expected that the update will be released before the end of this year but that clearly does not seem to be the case anymore.
Nokia did not specify what 'early-2012' means but it is generally assumed that it will be around February 2012, thanks to some of Nokia's Facebook pages. Although this may not apply to all devices in every region.
You can read the official statement in the source link below.