The video is viewable again- they do mention the word "Touchscreen" many times, but the stylus appears to be required- like I said, I think that they are touting their proprietary tech. The only differences that I see on spec between the 510 and 516 are the higher 4 v. 8 color greyscale, the processor and the flash memory. So I would expect my experience with the 510 to be slower and not as crisp, but otherwise identical. I'll let everyone know when it arrives.
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