Nokia has confirmed through a post on its Twitter account that the Belle update will start rolling out to older devices starting next week.
Update: The info from Nokia's Twitter account is wrong, they've posted a new tweet saying that the rollout of Symbian Belle will be in February, not next week.
Although Nokia had previously promised the update to arrive in February, it seems they're going to be nice and release it a week in advance.
The devices that will be updated to Belle include Nokia N8, Nokia E7, Nokia E6, Nokia X7, Nokia C6-01, Nokia C7, Nokia 500 and Nokia Oro. Nokia has also confirmed that the Nokia N8, C7 and C6-01 have now started shipping with the Belle update pre-installed and we're sure other handsets will join them soon.
If you have one of the above mentioned devices, keep an eye out for the update next week.