Microsoft has just released Windows 8 for general public and lots of users has downloaded or upgraded their pc to Windows 8. The Verge has reported that Microsoft is building OS codenamed Windows Blue which they might launch by the mid of 2013.
This will bring number of changes in UI and some improvements too. Microsoft will changes its pricing structure and launch this OS at very affordable price or they might launch it for free too.
Windows Blue will only work with genuine copies of Windows, pirated version will not be able to download it from Windows Store.