Both phones will go on sale sometime in November.
Pricing, Microsoft assured, will be made available in the coming weeks.
8X all around
AT&T will host the Windows Phone 8X along with its carrier compatriots.
T-Mobile plans to bring the device to its shelves for $199 after a $50 mail-in-rebate.
The 8X hits T-Mo Nov. 14, so whether AT&T follows suit or decides to march to the beat of its own Windows Phone 8 drum, we should know soon enough.
For its part, Verizon also plans to carry the 8X for $199 on a two-year contract "by Thanksgiving."