Microsoft’s tight hardware spec for Windows Phone 7 smartphones means that Windows Mobile 6.x devices – including HTC’s just-launched HD2 – can’t be upgraded.
Owners of HTC’s highly-praised HD2 touchscreen smartphone will be unable to upgrade the device to Microsoft’s new Windows Phone 7 software when the OS is released towards the end of the year.
Link – http://apcmag.com/microsoft-no-windows-phone-7-upgrade-for-windows-mobile-6x-devices.htm