Windows 10 will be available in 190 countries in 111 Languages

Windows is currently used by over 1.5 billion users around the world, so, Windows 10 will be offered as a free upgrade to customers who have Windows 7, Windows 8.1 and Windows Phone 8.1 for the first year after it is released.

Microsoft has partnered with Lenovo , Tencent and Qihu 360 to “spur adoption of Windows 10 worldwide.”

Lenovo will be offering Windows 10 upgrade services at 2,500 service centers and retail stores in China along with selling Windows phones through China Mobile .

Tencent will launch its QQ app and many of its popular PC games like “League of Legends,” “Cross Fire” and “Dungeon & Fighter” for Windows 10.

Internet security company Qihu 360 will offer Windows 10 for free to their customers in China, and Xiaomi will be setting up a group of Mi 4 smartphone “power users” with a program to help test Windows 10.

Microsoft’s deal with Xiaomi, which is known as the Windows Insider Program, is interesting because Xiaomi’s flagship products are Android-based smartphones.

Microsoft is planning to partner with other mobile companies for its Windows Insider Program in the near future too.