Conflipper recently posted some info about two HTC devices slated for 2010: Huashan and Hengshan, named after mountains in China.
Sinces these reference-names are Chinese and not very Western e.g. Mondrian, Rhodium, Whitestone, it's a pretty good indication that these are devices that we'll never see here in the U.S. or Europe for that matter. Well that and they're on Dopod's release schedule.
Going further, Engadget are calling these Windows Phone 7 devices which is incorrect (WMPoweruser was savvy enough not to make this mistake). The following reference is inside the files:
In case you forgot, this is Internet Explorer Mobile 6 (5.2), the same one that debuted with WM6.1.4 and is in WM6.5. That browser is quite at odds with the Windows Phone 7 browser based on the IE7 and IE8 Trident rendering engines. Just going by screen resolution (480x800 and 320x480) tells you nothing meaningful to differentiate between the two OSes.
So here's the deal: HTC and other lower-tier manufacturers will continue to churn out WM6.5 "Classic" devices in certain markets, namely Eastern as a low-cost alternative to the high-end Windows Phone 7 experience. Sure, both of these new HTC devices could be bumped to Windows Phone 7, but right now there is zero evidence that they are currently planning it. In fact the 320x480 device is probably just a HTC HD Mini spin off.
In other words HTC Huashan and HTC Hengshan: nothing to see here