Daniel had reported the AT&T Lumia 830 would support both Qi and PMA standards, and he reiterated it again in yesterday's Lumia 830 announcement articles.
In one he wrote:
"Although the video glosses over the wireless charging capability, the AT&T version does have support for both Qi and PMA wireless charging standards. From our understanding, AT&T will not boast about the Qi wireless capability in its promotional material likely due to a conflict of interest."
And in the other he wrote:
"The AT&T version of the latest Lumia will also feature built-in PMA and Qi wireless charging, along with an extra back plate in the box."
I can't imagine Daniel would be making these statements if they weren't true. His information is usually very accurate. It makes sense that AT&T wouldn't officially advertise the fact that the phone supports Qi. I guess we'll just have to wait and see until someone gets one and tries it out to know for sure.