At today's event on Windows 10 Microsoft, the company announced the good news for several Windows friends.
All customers using Windows 7, 8 and 8.1 will be able to upgrade their systems to Windows 10 completely free of charge.
Microsoft stated that the free upgrade it will be valid for the first year immediately after launch. The same goes for Windows Phone 8.1.
Terry myerson, Microsoft's VP of Windows, said the company wants to make it a "smooth upgrade" for all users when Windows 10 is released.
Information - Photos TNW