Windows 8.1 Preview: Watch the video

Microsoft has released a preview version of windows 8.1 where some previous version's features have come. To know and stay with Microsoft just visit this link and click on "Get it now."
Actually there is no ISO files now to download but it may present within some days. Microsoft has posted a Preview FAQ page to help the persons who want to install the preview version. So try to see the FAQ before install the preview version.