Microsoft made a historic gesture by announcing that they are offering the new Windows 10 for free for users of Windows 7, Windows 8 or Windows 8.1.
This promotion will be active for one year from the date of launch of Windows 10.
As far as features are concerned, the Windows 10 interface will mark the return of the Start menu but also the addition of two major new elements: Cortana, the voice assistant on Windows Phone 8.1, and the Project Spartan web browser.
Similar to the version currently available on Windows Phone, Cortana learns anything about the user continually.
As for the Project Spartan, the new engine is primarily designed for web standards and adapted to new uses.
For example, it becomes possible to save articles to read later offline or notate directly on a web page with a stylus.
A new feature in Windows 10 was presented, the Action Center, which pops from the lower right corner of the screen and contains a list of your latest notifications and other useful information.
Finally, Microsoft also took the opportunity to unveil Windows HoloLens, a headset that superimposes holograms in the environment where the user is located.
The headset will be completely wireless and it will include a HPU (Holographic Processing Unit) which provides natural interactions between the individual and his environment.