A Chinese site has posted a render of the HTC Mondrian with AT&T branding, confirming once again that the handset is indeed arriving on the "premier carrier" for Windows Phone 7. The HTC Mondrian is thought to be an US version of the HTC Mozart, which recently appeared on a retailer's website, sporting an 8MP camera with Xenon flash and HD video recording, as well as a "rich suite of 3D applications".
Here's for hoping, but, judging from the rumors that it will have next-gen Snapdragon inside, it might very well be something different further down the Windows Phone 7 pipeline. We'll know much more on Monday, after the big WP7 show, where HTC is scheduled to show its Windows Phone 7 gear.
HTC Mondrian Specifications