s9_58shwpl3 is the official Solaris 9 FCS (First Customer Shipment) release.
None of the FCS Solaris releases have "wos" in their names:
S8 FCS:
Code:
Solaris 8 s28_38shwp2 SPARC
Copyright 1994-2004 Sun Microsystems, Inc. All Rights Reserved.
Assembled 21 January 2000
S10 FCS:
Code:
Solaris 10 3/05 s10_74L2a SPARC
Copyright 2005 Sun Microsystems, Inc. All Rights Reserved.
Use is subject to license terms.
Assembled 22 January 2005
Releases (FCS, updates and H/W) older than Solaris 8 had no "wos" in their name either, eg:
Code:
Solaris 7 s998s_SunServer_21al2b SPARC
Copyright 1998 Sun Microsystems, Inc. All Rights Reserved.
Assembled 06 October 1998
Code:
Solaris 2.6 s297s_smccServer_37cshwp SPARC
Copyright 1994-2004 Sun Microsystems, Inc. All Rights Reserved.
Manufactured in the USA 18 July 1997
Code:
Solaris 2.5.1 Hardware: 4/97 SPARC
Copyright 1994-2004 Sun Microsystems, Inc. All Rights Reserved.
Manufactured in the USA 16 April 1997
Releases older than Solaris 2.5.1 H/W 4/97 had no /etc/release.
