Over the last few days you may have noticed a small icon on your Windows 8.1 taskbar asking you to reserve your copy of Windows 10. That’s Microsoft preparing you for the free Windows 10 upgrade that will be available later this summer.

Earlier today Microsoft officially announced that Windows 10 will be available July 29 in 190 countries. Windows 10 will “help people be more productive and have more fun, with a personal and natural experience that works across all their devices,” the company states in an announcement today.

Windows 10 will be available as a free upgrade to people using Windows 7 and Windows 8.1,1 enabling hundreds of millions of people around the world to upgrade to Windows 10 for free.

“Windows 10 is a new generation of Windows designed to empower you to do great things,” said Terry Myerson, executive vice president, Microsoft. “Windows 10 starts to deliver on our vision of more personal computing, defined by trust in how we protect and respect your personal information, mobility of the experience across your devices, and natural interactions with your Windows devices, including speech, touch, ink and holograms.”

In addition to the Office 2016 full-featured desktop suite,4 new Universal Windows applications for Word, Excel, PowerPoint and Outlook will offer a consistent, touch-first experience across a range of devices. Designed from the ground up to run on Windows 10 and perfect for staying productive on the go, people can easily create and edit Word documents and deliver PowerPoint presentations while annotating on the fly. With new touch-first controls in Excel, people can create or update spreadsheets without a keyboard or mouse.

On July 29, people can get Windows 10 for PCs and tablets by taking advantage of the free upgrade offer, or on new Windows 10 devices. New Windows 8.1 devices will also easily upgrade to Windows 10, and many retail stores will help upgrade new devices. Starting today, people can reserve their free upgrade if they choose.

Windows 10 for other devices will be available later this year.