Chromebooks running on the dev channel. It's becoming clear that Google is prepping to take on the desktop OS market on more familiar ground. The updated UI includes a taskbar, a Launchpad-like launcher and individual overlapping windows, while hardware acceleration allows for those new components to feature slick animations. Chrome OS 19 also gains support for a few new file types, including .gz and .tar, as well as a slightly updated media player. The only truly unfortunate thing is it seems Cr-48 owners are left out in the cold. One more screenshot after the break.