I’ve got a few easy links for you to visit if you haven’t had a chance to check out Windows Server 2012 R2 or Hyper-V 2012 R2. I’ve also included a few other links of interest as well!
(Note: As of Oct 18th, these links will take you the non-Preview version.)
Need something else? There is always the TechNet Evaluation Center. The Windows 8.1 Enterprise Evaluation is available there now.