This is it: the Windows 8 Consumer Preview. Containing over 100,000 changes from the older Developer preview, the Consumer Preview of Windows 8 has access to many of the Metro-style apps as well as new apps, like the Windows Store. The Consumer Preview is available in both 32-bit and 64-bit versions in English, Chinese, French, German, and Japanese. Microsoft’s minimum requirements for the Consumer Preview are a 1GHz processor, 1GB of RAM, 16GB of free storage space, and a DirectX 9-compatible graphics card — the exact same requirements as Windows 7 (interesting, no?).
You can get the Windows 8 consumer preview at the source links.