Chance to upgrade to Windows 7 for free
on june 2, microsoft confirmed that it will support customers with a 'special deal' when upgrading to windows 7 if they purchased a pre-installed vista pc.
Tags : free upgrade
Why does Apple give free OS X Mavericks upgrade?
instead of earning an inadequate profit from operating system upgrades, apple will make a profit from buying and selling apps on the app store and services like icloud or itunes