Sim, você pode obter a Enterprise Evaluation Edition !
This evaluation provides a 90-day trial of Windows 8 Enterprise edition. Both 32-bit and 64-bit versions are available as ISO images in the following languages: Chinese (Simplified), Chinese (Traditional), English, English (UK), French, German, Italian, Japanese, Korean, Portuguese (Brazil), and Spanish. In order to use this evaluation, you must register and the product must be activated online with Microsoft-hosted activation and validation services.
No entanto, vem com algumas grandes estipulações:
- The evaluation edition will expire and cannot be upgraded.
- To upgrade, the evaluation must be uninstalled and a non-evaluation version of Windows must be re-installed from your original installation media.
- Consider running the evaluation edition in a virtual environment or installing on a separate hard drive or partition. The will allow you to upgrade your original Windows installation to Windows 8.
- During registration (required) you must login with a Microsoft account and provide your name, e-mail address and country.
- You are required to activate the product online within 10 days after installing.
- Once the evaluation is installed, you cannot upgrade. To revert to a previous version of Windows, you must do a clean install from your original installation media.
Basicamente você não pode executar o acordo de atualização que o Windows está oferecendo aos atuais usuários do Win 7 (ou usuários do Win 8 RC com licenças válidas do Win 7)