It’s here people!
Microsoft has made available the download links today.
The build number is 8400 and is sized at 2.5GB for 32bit and 3.3GB for 64-bit. It is available for download via ISO or web installer, much like the Consumer Preview.
Processor: 1 gigahertz (GHz) or faster
RAM: 1 gigabyte (GB) (32-bit) or 2 GB (64-bit)
Hard disk space: 16 GB (32-bit) or 20 GB (64-bit)
Graphics card: Microsoft DirectX 9 graphics device with WDDM driver
The text from the page:
Windows 8 Release Preview Setup will check to see if your PC can run Windows 8 Release Preview and select the right download. Setup also features a compatibility report and upgrade assistance. Make sure your devices are connected to your PC and turned on before you run Setup. Built-in tools for creating an ISO or bootable flash drive are available for some previous versions of Windows (excluding Windows XP and earlier). You can find system requirements and additional information in the FAQ and in the links on this page.
Note before you download: Windows 8 Release Preview is prerelease software that may be substantially modified before it’s commercially released. Microsoft makes no warranties, express or implied, with respect to the information provided here. Some product features and functionality may require additional hardware or software.
Download the Windows 8 Release Preview here
An ISO image must be converted into installation media stored on a DVD or a USB flash drive. Instructions are provided on this page. Developer tools are available for download from Windows Dev Center.
Important: If you decide to go back to your previous operating system, you’ll need to reinstall it from the recovery or installation media that came with your PC, which is typically DVD media.
If you don’t have recovery media, you might be able to create it from a recovery partition on your PC using software provided by your PC manufacturer. Check the support section of your PC manufacturer’s website for more information.
After you install Windows 8, you won’t be able to use the recovery partition on your PC to go back to your previous version of Windows.