Does the HTC One support Wideband Audio (HD Voice)?

[barkomatic]

Has anyone heard about this? I know that AT&T and T-mobile are going to enable it at some point and I've heard its a noticeable improvement. I actually make a decent number of calls, and enhanced call quality would be a big plus when the carriers role it out.

I can't find a reference to this feature on the spec sheet or the reviews I've read.