Nokia Lumia 630, 635 and 930 to be the first to have the latest Microsoft's OS.
The company also launched a desktop at Rs 11,999 in Mumbai. It comes loaded with Windows Vista or XP Home Edition.
Ashish Narsale/Rediff.com tells you what you must keep in mind.
With the new release, Microsoft is not only trying to capture the imagination of mobile and touch screen users, but also revive popular features from older versions.