[DizzyThermal]

From droid-life.com:

We'll start this off by saying that this is NOT the final Gingerbread build that your HTC Thunderbolt will receive from Verizon whenever it gets approved. This is technically an "official" build from HTC and Verizon, but again, is not THE build you will see when they start rolling out 2.3.
What I'm trying to tell you, is that if you load this, there is also a chance that you could be stuck with it for good (non-rooted users of course). That make sense?

I don't know the validity of that statement, but there may be no way to root that leak, and when the OTA comes, you won't be able to update (is what I get from droid-life's statement)..

Until someone finds a way to root that leak (if someone does) you're pretty much stuck there..