If this scenario of a VZ Navigator app being made available on the Android Market for a phone that hasn't yet been rolled out seems familiar, a similar situation occurred with the Motorola DROID 2 Global back in November.
Still, optimists will say that this is a positive sign that the launch of the HTC Thunderbolt is imminent. As we reported yesterday, there is some speculation that the handset is in the process of being shipped to Verizon retail locations.
source: AndroidMarket via AndroidCentral
The VZ Navigator app is now available in the Android Market for the HTC Thunderbolt-only the phone is not yet available