According to Engadget it covers all major US carrier even Sprint with their lousy LTE.
You'll get at least LTE bands 2/4/5/17 on the AT&T model and band 25 on Sprint. Verizon's model should include bands 4 and 13. You won't get all those frequencies in one phone, though. On AWS, there is a T-Mobile version of the Moto X coming; it's not just a rebrand of the AT&T model, though (that lacks AWS 3G).
Why did you bring such newspaper article to the party instead of technology sites like Engadget or The Verge?
