Windows 10 will not be available for much everyone but the editor, probably concerned that adoption is fast and followed. And it's logical that users already using a Windows system are honored.
What are affected versions ?
First of all those who have the greatest deserves to have wiped the plasters Microsoft transition to the touchscreen: Windows 8.1 users. They can pass to Windows 10 for free.
Windows 7 users will also have the possibility. Is it a desire to avoid reproducing the "Windows XP effect"? The Microsoft system had indeed survived a little too long to changes of system that the publisher suggested yet at low cost.
Finally, as is known for some time, Windows 10 will be issued on smartphone. The owners of a mobile running Windows Phone 8.1 will also pass under Windows 10 for free.
Uncertainties and limitations
The only clear limitation announced by Microsoft is the time during which all eligible systems will benefit from the upgrade. From the date of official availability, the user will have one year to claim a free upgrade. Again this limitation will encourage more reluctant to not to hesitate.
A service more than just a simple system
Free will also be maintained throughout the life of the product using Microsoft Windows 10 which presents as a service, not an operating system.
And to avoid falling into the multiplicity of version numbers, the new developed will be delivered as soon as it is ready. No more waiting for the next major version of Windows, there will be no other versions of Windows 10, as Windows 10.
We will have the opportunity to return to these points before the final release of Windows 10 planned for the summer or fall.
