In an telephone interview with Reuters, Microsoft's Terry Myerson: "We are upgrading all qualified PCs, genuine and non-genuine, to Windows 10," The plan is to "re-engage" with the hundreds of millions of users of Windows in China, he said, without elaboration."
Seems China is target of this move but eventually it would be good for majority of users to get Windows 10 upgrade at no cost. It's more of marketing strategy like luring them with free taste then Microsoft will be offering subscription to their Office 365 for gain. Still it is Win Win situation for both consumer and Microsoft.
Windows 10 will be launching this Summer in 190 countries.
