Solaris 10 10/08 Release: This release enables you to install and boot a ZFS root file system. You can use the initial installation option or the JumpStart feature to install a ZFS root file system. Or, you can use Oracle Solaris Live Upgrade to migrate a UFS root file system to a ZFS root file system. ZFS support for swap and dump devices is also provided. For more information, see Chapter 5, Installing and Booting an Oracle Solaris ZFS Root File System.
For a list of known issues with this release, go to the following site:
Also, see the Solaris 10 10/08 release notes.