Two AT&T ads have surfaced on YouTube featuring the HTC Mondrian. We've seen speculation that the Mondrian was headed to AT&T but nothing as strong as an advertisement.

AT&T has long been considered at the forefront of the Windows Phone 7 launch and could have as many as six devices in their Windows Phone 7 lineup. While the ads don't shed much light on when the Mondrian will be available, is it safe to say that with these ads the Mondrian will be one of the six?

Follow the break to see the second ad featuring the HTC Mondrian for AT&T.