AT&T is approaching the announcement of its long-anticipated shared data plans, hints a comment from AT&T Mobility CEO Ralph de la Vega. "I'm very comfortable with the plan that will be offered to our customers," he told CNET yesterday in an interview at the ongoing CTIA trade show. The executive in fact said that the carrier knows how the plan will be structured, but declined to say when it might launch, including whether or not it will be out in the next few months and/or arrive before an expected Verizon alternative.