Latest exciting news : Red Hat Enterprise Linux 8 Beta is open to customers Click on "GET STARTED" to gain access.
Red Hat Developer article from Mike Guerette (Global Developer Relations Manager at Red Hat) : RHEL 8 Beta is here
More information about RHEL 8 Beta in the Knowledgebase article Red Hat Enterprise Linux 8.0 Customer Beta FAQ.
Edit 2018-12-11 :
I just saw that my information about the System Purpose issue is marked as "Best Response". I haven't marked it as such. I assume that this was done by a Customer Portal system administrator or a Red Hat employee who is responsible for RHEL 8 development. First I thought about un-marking it ... but then I decided to leave it as it is, because the information is somewhat essential to start the RHEL 8 Beta testing at all and all users who enter the discussion immediately can see it.