Microsoft is betting big with Windows 10 (Do read : Windows 10 Vs Ubuntu), as much as calling it the last version of Windows. The new major upgrade to the world's most popular operating-system is also being offered as an "free upgrade" to existing Windows 7 and Windows 8.1 users, there are still users which will need to buy a new copy of Microsoft Windows 10 and it seems NewEgg jumped the gun and published details which are even not revealed by Microsoft yet.

According to the "Pre-order" page at NewEgg, Windows 10 will be available for purchase from 31st August 2015 and an OEM copy of Windows 10 Home will cost $109; and $149 for the "Professional" flavor of the OS.