Microsoft announces Windows 10 release date by Matt Vella @FortuneMagazine June 1, 2015, 6:09 AM EDT E-mail Tweet Facebook Google Plus Linkedin Share icons Microsoft will launch Windows 10 on July 29th. The technology giant had previously promised to release the next version of its computer operating system sometime this summer. That date represents aggressive timing for a company that has, at times, had difficult launches for major products. The Redmond, Washington-based company has been releasing increasingly polished preview builds of the software over the past few months. Windows 10 will be available as a free upgrade for users of Windows 7 and Windows 8.1. To publicize that, the company is making a small notification appear in users’ task bars. Clicking on the notification, pops up a slide show extolling the benefits of Windows 10. Some of the new features include: the return of the Start menu, an all-new Internet browser, and Cortana, a digital personal assistant making to Google Now or Apple’s Siri. From Microsoft’s release: With Windows 10, we start delivering 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. We designed Windows 10 to run our broadest device family ever, including Windows PCs, Windows tablets, Windows phones, Windows for the Internet of Things, Microsoft Surface Hub, Xbox One and Microsoft HoloLens—all working together Subscribe to Data Sheet, Fortune’s daily newsletter on the business of technology.