http://www.betanews.com/article/ATT-The-end-of-the-wireline-telephone-is-in-sight/1262297110

But the new AT&T went a huge step further than to denigrate its stepchild. In its filing dated December 21 and released Tuesday (PDF available here), the company called upon the Commission to begin consideration of a formal deadline for the transition of all wireline customers to a wireless system comprising broadband and IP-based connectivity -- refraining from referring to 3G or 4G services in a cellular context. AT&T's reasoning: Carriers can no longer afford to maintain the old network while simultaneously building out the new one.