If you’ve got the HTC Thunderbolt you’ll want to do a quick check of Menu > Settings > About Phone > System Updates as users in the HTC Thunderbolt Forum are reporting an OTA update is available and they’ve already downloaded it and got it running on their device.
Interestingly, they never got a notification that a download was available, so you’ll definitely want to give this the manual look over. If you’ve got your phone rooted I would proceed with caution as at least one forum member has an unusable phone after upgrading his rooted Thunderbolt and another is simply getting an “update failed”.
[Via Android Forums – Thanks TCM!]