Sun Cluster 3.1 8/05 Software has been released during last quarterly Sun Network Computing event.
Solaris 10 related new features include :
# Solaris 10 OS support
# Solaris[tm] Container coexistence for maximum benefit from server consolidation
# Solaris OS on x64 support, enabling use of AMD Opteron servers
# HA Agent for Solaris Containers
A description of the cluster-aware Zones ( aka ‘Container’ ) new feature can be found here.
To have a look at the what’s next ( not official ! ), read this.
Another version of SunCluster has also been announced during the event : Sun Cluster Geographic Edition. Basically enables multiple geographically dispersed sites.