Gizmodo publishes an interview with Symon Whitehorn, HTC's Director of Camera Development and the father of the Duo Camera (used to work for Kodak). Few interesting bits:
"...the basis of it is sort of old technology. You take a stereoscopic view of the world, much like your brain does—you see the world in 3D and you assign range and speed values to things based on your experience—and that's essentially what this is doing."
"There are a few early benefits we already have from this, which is the shallow depth-of-field "bokeh" kind of effect we can create that's typical of expensive glass. But there is going to be many more applications for it. We've just scratched the surface, and we're not really there yet in terms of the pure accuracy of the speed measurements, but the more we develop this platform, there's going to be some pretty intriguing data we're going to be able to extract."
The Ultrapixel "image sensor is based on last year's design, it's totally new (and comes from a new supplier). The revamped sensor should give daylight photos much better saturation and color accuracy."