Microsoft released a technical preview of Windows 10 this morning, and it’s available for download here.

System requirements are a 1GHz or faster processor, 1GB of RAM for 32-bit systems or 2GB for 64-bit systems, 16GB of free hard disk space, and a Microsoft DirectX 9 graphics device with a WDDM driver. In other words, anything that’s capable of running Windows 8.1 can be moved to Windows 10. You can upgrade to the Windows 10 preview from either Windows 7 or Windows 8/8.1.

It’s free, as long as you sign up for the Windows Insider Program with a Microsoft account. The 32-bit download is 3.16GB while the 64-bit one is 4.10GB. Although Microsoft makes a version of Windows for ARM devices, the preview is x86-only. The preview will expire on April 15, 2015, with Microsoft releasing the final version of the OS sometime after that.