Дословно цитирую via http://blogs.sun.com/stw/entry/solaris_10_update_5_beta :

Infiniband flash update tool
Sockets Direct Protocol (SDP)
Persistent Group Reservation for iSCSI target
iSNS Client for iSCSI target
IP addressing ability for IBTF interfaces
Graphical User Interface for PostgreSQL (pgAdmin 3)
Support for download of new firmware into SATA drives
Support for Enhanced Intel SpeedStep power management technology
SunVTS 7.0
SAS multipathing support
Flash 9
New Instant Messaging Client (pidgin 2.0)
Virtual Network Computing (VNC)
Capping CPU resource usage

А за вкусным идите вот сюда – https://feedbackprograms.sun.com/ .

UPD: xVM нет .