After unveiling Windows 10 yesterday, Microsoft released its Technical Preview today, and it is now available for users to download and install on their systems. This early preview release is not feature-complete by any means, but it does give early adopters, developers, enthusiasts and others an opportunity to take the OS for a spin, and get to grips with some of what it offers.
As with earlier OS previews, this one won't live on forever, of course. In Microsoft's release notes, it states that the "Technical Preview expires on April 15, 2015. If you’re running Technical Preview, we'll send you notifications beginning on April 1, 2015 to remind you that it’s time to upgrade your PC to a newer version."
The Technical Preview is expected to be superseded early next year by a 'consumer preview' release, which will include many of the features that have not yet made it into the version of the OS currently available for public testing.
Microsoft has not yet committed to a firm release date for the full and final version of Windows 10, but says that it is expected to be made available to its customers by the middle of 2015.