It could very well be WVGA, and frankly I hope it is. But it will not be the 400x800 (or 480x800, whichever it is) of the 2008 Touch HD. What you're looking at in the Barium model is simply the current Touch Pro with a larger screen, thus negating the wheel. Even the keyboard has fewer keys on it than the current Touch Pro, which either means the keys on the Barium are larger or the entire unit has been made smaller than the current Touch Pro.
Look at the Barium and then look at the link below. I just don't see the Barium/Tungsten/Rhodium having as large or as HD a screen. To add a keyboard onto the current dimensions of the Touch HD would be awful. It would be the Thoth. Probably why Apple won't do it to the iPhone. Phones should be getting smaller, not larger.
http://cache.gizmodo.com/assets/imag...tctouchhd1.jpg