Good news is Microsoft let anyone to download Windows 8 Evaluation for Developers, which suppose to be only for developers. It is a free trail for 90 days anyone who like to experience Windows 8. This is the final version , you can give it a try without a risk. If you are a developer you can download Visual Studio 2012 from Windows Dev Center.
Both 32-bit and 64 bit versions are available to download. Do not forget to go through the warning given by Microsoft before installing Windows 8 ED. Remember that you can after 90 days expired you cannot revert to previous version, extend trail period or upgrade even using a genuine product key. If you install
If you want to try it out go to MSDN Evaluation Center site and download it.