Nokia USA just confirmed in a tweet that there wouldn't be any Belle Update for Nokia Astound.
which is the T-Mobile variant of the Nokia C7.
In a reply to an obvious Astound user who asked about its availability, Nokia replied:
In a bizarre way, Nokia replied "thanks for your patience"... what patience?? not cool, Nokia. I dont think the Astound has been out for up to a year. Nokia should sort this out with T-Mobile and release the update to us, if not, offer free upgrade to Lumia 710 for Astound users, it's the least they can do, you owe them that much! come on!