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.

Windows 8 Evaluation

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.