Windows Phone 7 powered HTC Spark spotted on HTC's web siteThis article contains unofficial information.
We've already heard about Windows Phone 7 devices like the HTC Mondrian and HTC Mozart through HTC's MMS XML web site, but it looks like yet another is being added into the mix. The HTC Spark is the latest device to be seen on the site and continues to show what kind of commitment HTC has made for the highly anticipated new platform expected to revitalize Windows as we know it. This time around, the HTC Spark is listed as being a keyboard-less handset with an unspecified sized WVGA display and will run the next generation Windows Phone 7 platform. Although it was believed to be a CDMA device, the information gathered from the listing point to a GSM/GPRS radio – but it's also possible for this one to be a dual-mode device; time will truly tell.
source: HTC via wmpoweruser