Filed under: Cellphones, WirelessThe FCC has just lifted its gag order on the gory details of the 700MHz Auction 73, and AT&T wasted absolutely no time setting up a press conference to discuss how it was planning to utilize its win in the so-called B Block. Bottom line: AT&T's moving to LTE for its 4G infrastructure -- no surprise there, since it's the natural evolution for GSM carriers -- and the purchase is designed to support that build-out. As they've said before, they're tooting their horn