Microsoft offers a free 90-day evaluation version of Windows 8.1 Enterprise edition is available in 32-bit and 64-bit ISO versions
You can Download it now directly from the TechNet Evaluation Center.
Editions: The Windows 8.1 Enterprise evaluation is available in 32-bit and 64-bit ISO versions.
Languages Supported: English (United States), English (Great Britain), German, Spanish, French, Italian, Japanese, Korean, Portuguese, Russian, Chinese (Simplified), Chinese (Traditional)
Directly Download From Microsoft: Click Here