So if the HTC Incredible was coded as the ADR6300 in Verizon's internal systems, just what do you think an ADR6400 could signify? A pair of screenshots from a VZW employee living out a Julian Assange daydream have seemingly confirmed the common expectation that Verizon will very soon deliver its Incredible successor -- better known to you and us as the LTE-equipped HTC Thunderbolt. Aiding and abetting the HTC handset in getting the red team's