RHEL was recently released, it has a lot of new features and cockpit software for managing the OS is coming by default with the Operating System.
To download RHEL, you need a Red Hat login and valid subscription. You can also activate the trial version to download it.
The best way to test it is to download the latest VirtualBox from virtualbox.org and install it on your Desktop. Once installed just load the ISO and proceed with the installation.
You can follow this youtube video for details about the installation.