Microsoft has 3% share of mobile OS market. So now it has decided to offer it free to any device which has less than 9 inch screen size (measured diagonally). That means all the smartphones, phablets & tablets.
It has already tied up with Micromax to launch new smartphones and tablets based on Windows.
You could be forward looking and start practising to make apps in Windows 8. The languages that can be used to make Windows 8 apps are:
• Visual C++
• Visual C# & Visual Basic