A Brief History of Solaris releases

Solaris 7 – 1998
Solaris 8 – 2000 - latest update is Solaris 8 2/04
Solaris 9 – 2002 - latest update is Solaris 9 9/05
Solaris 10 1/05 = Solaris 10
Solaris 10 1/06 = Update 1
Solaris 10 6/06 = Update 2
Solaris 10 11/06 = Update 3
Solaris 10 8/07= Update 4 – Now Available!
Planning Spring '08 = Update 5