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Note before you download: If you’re using an English version of Windows, you can only install Windows 8.1 x64 Preview from the Windows Store if your OS base language is English (US).

If you don't have recovery media, we recommend that you create a USB recovery drive before you install Windows 8.1 x64 Preview so that you can go back to Windows 8 if you need to.

If you’re ready to bring back the Start button, you can download the Windows 8.1 x64 Preview right now.

The Preview release is open to all users, though any machine that isn't running Windows 7 x64 or later will have to perform a fresh install to get it working.

Windows 8.1 x64 - a free update to Windows 8 x64 - is coming later this year, and a prerelease version is available now for you to try. Windows 8.1 x64 has new ways for you to personalize your PC and includes a wave of awesome new apps and services.

A single search now brings you results from your PC, your apps, and the web. See results in a clean, graphic view that lets you take immediate action and launch apps. Search, click, do. Find a song and start playing it, or find a video and watch it right away.

Set up a slide show on your lock screen by picking your favorite pictures. Arrange the stuff on your Start screen so it's just the way you want it. Choose from more tile sizes, more colors, and more backgrounds—including animated backgrounds.

When you get Windows 8.1 x64 Preview, you also get to check out the new Internet Explorer. Internet Explorer 11 Preview is built for touch, with faster load times, a full-screen experience that includes side-by-side browsing of your sites, and real-time info delivered on your Start screen through live tiles for your favorite sites.

SkyDrive is now the default location for saving documents. So you always have your files wherever you go, even when you’re offline. And with the included SkyDrive app, you can manage both local files and SkyDrive files in one place.