The release dates of the various SMS versions:
SMS 1.0 (code name Hermes) – January 7, 1994
SMS 1.1 – July 28, 1995 - See a picture of SMS 1.1
SMS 1.2 – July 29, 1996
SMS 2.0 (code name Opal) – January 11, 1999
SMS 2003 (code name Topaz, Emerald) – October 22, 2003
System Center Configuration Manager 2007 (formerly SMS - code name Ruby, Diamond) - August 24, 2007.
注：由于SMS 1.1 和 1.2 是小版本升级，故没有特别的CODENAME。