We'd reported back on November 10th that AT&T was actively working with Nokia on a version of its well-received Lumia 800 with LTE built-in, and now CNET's hearing the same thing — along with Verizon, too, which would cover the two big up-and-coming national LTE networks the US has right now. The site points out that simply because a carrier tests a device certainly doesn't mean they're going to release it, but the rumor dovetails nicely with Verizon's previous language that LTE support would be critical to its continued support of the Windows Phone platform. Regardless of what happens here, neither AT&T nor Verizon will be the one welcoming Nokia back to the American smartphone market — that honor should go to T-Mobile later this week when it will likely introduce a US variant of the Lumia 710.