Well, since the upgrade of Windows 8, developers can now develop apps in HTML and CSS. Windows 8.1 has some other built-in bug fixes too. But this feature came up by the upgrade of OS from Win 7 to Win 8.
So, let us get our selves warmed up for Windows Programming too. It’s just been made easy for us!
For more go to: http://msdn.microsoft.com/en-us/windows/apps/br229512