The "documentation for Solaris 10 Operating System" page includes links to the HTML and/or PDF versions of the documents for each of the releases of Solaris 10:

• Oracle Solaris 10 update 9 9/10
• Solaris 10 update 8 10/09
• Solaris 10 update 7 5/09
• Solaris 10 update 6 10/08
• Solaris 10 update 5 5/08
• Solaris 10 update 4 8/07
• Solaris 10 update 3 11/06
• Solaris 10 update 2 6/06
• Solaris 10 update 1 1/06
• Solaris 10 (3/05)

Other docs cover VTS and the Java Desktop System.
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