I just called my local service department about it. The guy said 1) this is new to him... it came out April 30th; 2) they would have to send it to their body shop for the work; 3) the TSB showed no VIN range so it applies to all '05-'07's; 4) he didn't think they would be able to do it unless the tailgate was brought in with some sort of damage...
So, according to that train of thought, I'll have to damage the tailgate first (not on purpose of course) and then bring it in. Not only does that mean that they'll then have to do the TSB, but they'll have to repair/ replace the tailgate on top of that. The guy didn't seem to buy my explanation that the TSB was a PREVENTATIVE measure.
I left a message for his Service Manager and am waiting for a call back from him. We'll see where this goes. If anyone else has any luck with their dealership, please let us know.