I was looking through the web and found this article..hopefully it's real.
Verizon Thunderbolt Getting OTA Android 2.3.4 On June 30?
Verizon Thunderbolt Getting OTA Android 2.3.4 On June 30?
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Also there are a some grammar errors that are bothering me as well about this. I'm not out right calling it a fake, but it wouldn't be unheard of.
What grammar issues? Looks just like the wording from the first OTA Verizon posted here:
Software Update: HTC Thunderbolt
but if you really want GB root your thunderbolt.. that simple. right now im running 2.3.4 plus sense 3.0.. Ill be switching to CM7 once we get the radios all fixed.
Hows it all working for you?
If it is real what we see looks like a rough draft which would explain the typos. I think gTalk is correct or accepted at least, just run a market search for gtalk and you will get plenty of apps with that in there. I won't believe the GB update is coming on 6/30 unless I get prompted for an OTA and after the install I have GB.

It's amazing and has been my daily driver for some while now. I was going to try out cm7 until I read about the 4g 3g handoff problems so I'm going to wait. But all in all loving sense 3.0 with gingerbread. Not to mention.. The easy 12+ hrs I'm getting now while using juice defender ultimate