If you've been wanting to give Solaris/OpenSolaris a try but are looking to stay on the cutting-edge more so than the quarterly
Solaris Express Developer Edition (SXDE) releases, another SXCE release is now out. The 75th build of Solaris Express Community Edition is now available and continues in the two-week release cycles. Among other features, Solaris Express Community Edition (SXCE) Build 75 has better integration with OpenSolaris xVM virtualization. Download links and more information are available from the
OpenSolaris Forums.