Despite the fact that the Moto X hasn't even been officially announced (unless you count Eric Schmidt's Idaho flaunt-fest or Dennis Woodside's D11 talk as "official"), there's a lot we already know about the device. What we haven't heard for certain yet are which carriers in the US will offer the new handset, though FCC docs and other leaks have revealed AT&T, Verizon and Sprint as likely candidates so far.
Whether or not the UnCarrier will really pick it up, a variant of the Motorola X known as the XT1053 has made its way through the FCC approval process with all the bands you've grown to love and use on other T-Mobile devices, such as AWS HSPA+ and LTE (along with bands 2 and 17, making this theoretically compatible with AT&T as well). This is a pretty clear indicator that worst-case customers will be able to purchase an unlocked version of the device with the right frequencies in tow.
Additionally, we noticed evidence that 802.11ac will also make an appearance. Have a look at the docs for yourself below, if you so desire.