Windows 10 will be available as a free download for a year after its initial release for users of Windows 7 and Windows 8. Users who don’t qualify for the free update will be able to purchase the software.
On June 1, Microsoft told CNET that Windows 10 will be priced similarly to its predecessor. That means prices will run from $110 for the Windows 10 Home package to $199 for Windows 10 Pro. A Windows 10 Pro Pack will let users upgrade from Home to Pro for $99.
Windows 10’s new features include Cortana, a digital personal assistant akin to Apple’s Siri or Google Now, a redesigned Start Menu, and all-new Internet browser.
The company has said Windows 7 and Windows 8 users can reserve an upgrade from a notification icon in their task bar. Windows 10 files will be downloaded automatically by July 29th.
Subscribe to Data Sheet, Fortune’s daily newsletter on the business of technology.