Previously, we mentioned industry reports indicating that Verizon planned to eventually bring Gingerbread to the HTC Thunderbolt. The new Verizon Fall Guide seems to confirm the idea that they intend to do exactly that. The new Fall Guide for Verizon lists that the TBolt has Gingerbread. Obviously that's not true, but it leads to the logical conclusion that they intend to make it true before winter comes along. We will keep a watch on this to let you know as soon as anything more develops.
Source: ThunderboltForums via TalkAndroid and Droid-Life