Sprint still isn't offering anything more specific than "this spring" for a Nexus S 4G launch date, but it looks like we may now at least be one step closer to a release. The Google-approved phone just turned up at the FCC this weekend under the guise of "SPH-D720," which we've already had some indication was indeed Nexus S 4G's model number, and which has also turned up on Samsung's own site for the phone before being removed for one reason or another (see an image of the cached site after the break). As you can see above, the illustration also cuts a familiar ou
