The documentation is now online for the
Solaris 10 7/07 HW Release. As noted on the
Solaris Releases page, Solaris 10 7/07 is only for SPARC Enterprise M4000-M9000 servers and no x86/x64 version is available. The latest Solaris update for all platforms is Solaris 10 11/06. You can discuss Solaris 7/07 in the
Phoronix Forums.