Original photo here ("HP Slate officially alive, ditching Windows 7 for Palm WebOS"), fair use for humour purposes
Summary: Former Microsoft staff seems like a possible reason for HP Slate running Vista 7 (even just in a prototype phase, assuming the new video is authentic)
With the coming of the Galaxy Tab and possible releases of a number of Android tablets at the end of the year, the question still remains: do most consumers really want or need a tablet device? We have seen the success of the iPad but have yet to see anything really go up against it, Android or otherwise. It’s a bit hard to judge sometimes what “real consumers” in the market place want as opposed to us Android fanboys, but a recent Zogby pole may clear some of this up.
Then there is the tablet-class device called "Slate". Watch the following new video of Vista 7 choking on it:
But then HP bought Palm, and with it webOS. webOS may be a phone operating system, but ever since news of the purchase came out, there has been widespread conjecture about a webOS-powered tablet. The appeal of webOS on such a device is that webOS is designed around a touch-screen, and built for low-power hardware—ideal for battery life.