The original page is outdated. Oracle released Solaris 11. It is available through the Oracle download pages.
The early adopter release shouldn't be used anymore. It can't meet the qualitity standards of a servicable main stream OS version.
Oracle is getting closer to the release of Solaris 11.
Oracle offers the Solaris 11 Early Adopter release for their OPN Gold levels members to download. The page states that It offers new features and the final functionality of Oracle Solaris 11.
Time to take a test drive with Solaris 11 final functionality...