As expected (at least by me), Windows 8 and IE10 will allow to write HTML5+CSS3+JS-based desktop applications. And when I say CSS3, I really mean it since Grid Layout and certainly Flex Box Model seem to be included (very certainly vendor-prefixed for the time being). I said it multiple times in the past, IE10 and its rendering engine are going to kick ass, allowing a brand new class of apps for Windows.. In other words, Microsoft is back in the pack.