At its Windows 10 event today, Microsoft announced that anyone with a Windows 8.1, Windows 7, or Windows 8.1 Phone device will be able to upgrade to Windows 10 for free during the first year of the new operating system's availability.
Operating Systems Group Terry Myerson confirmed the news, and the company has promised full support for users after the upgrade. Microsoft also demoed its Cortana personal assistant which will be included with all Windows 10 systems, including desktop PCs.
A release date for Windows 10 has yet to be announced, but you can give a go right now in the form of a technical preview.
Image source: Engadget.