The customer had contacted Verizon support via e-mail this week due to some issues with their ThunderBolt and was told about a new update that is due out soon. Some of the fixes are to include an issue with SMS/MMS messages going to the wrong contact, Gmail, and to resolve the pesky 4G data connection issue.
Unfortunately, no information was given if this update would also upgrade the phone to Gingerbread, or would still be Froyo. We'll keep you updated when we learn more.
Thanks to our tipster!