Verizon execs have been clear as crystal that unlimited smartphone data will follow the dodo, perhaps as soon as summer of this year, but in the meanwhile you can drink your fill of the best, as the HTC Thunderbolt will launch with a $30 unlimited LTE data plan. While we've no guarantees how long it will last, or whether you can grandfather the option into bigger and better devices down the road, it does open up a whole new avenue of opportunity for the Thunderbolt. Considering that Verizon's 4G USB modems top out at for