It's no secret that Samsung wants to spread its high-end Galaxy S far and wide, but the exact details of its US attack have been a mystery thus far. TmoNews is reporting a "trusted source" as saying that the phone is pegged for a launch on T-Mobile on July 21, which matches up with some chatter we've been hearing as well. Though T-Mobile's been supporting Android as aggressively as any carrier in the world, the company lacks a hero device -- something akin to the Droid Incredible or
