It looks like that retail exclusivity of the HTC Thunderbolt might not stretch past your brick-and-mortar stores, as Amazon has a listing for the upcoming 4G LTE handset. While no information on how they plan to price the phone is revealed, their landing page does state that the phone will be available for purchase on the 14th of this month. Whether that date implies it will be shipping at the same time is unclear.
We expect Verizon to come clean with the full release details anytime now, most likely after the iPhone hubbub clears up. We should have all the answers by the end of the week.