When can I install Window 10 on my laptop?

[Windows Central Question]

since when I can install window 10 in my laptop

I am from India and read the news in daily edition of news paper Hindustan Times that Microsoft's new Winows 10 operating system debuts Wednesday. It has new features, a streamlined Web browser called Edge and a desktop version of Cortana, Microsoft's answer to Google Now and Apple's Siri. My question is from what date it would be available so that we can down load. G K Tyagi

 

[eusty]

Re: since when I can install window 10 in my laptop

Soon I guess as although the roll-out is worldwide it's a staggered release.