IP Office Release 9.1 was made generally available in December 2014; Feature Pack 2 (Release 9.1.2) was issued in June 2015; Service Pack 10 (Release 9.1.10) was issued in March 2017; Service Pack 11 (Release 9.1.11) was issued in June 2017; Service Pack 12 (Release 9.1.12) was issued in September 2017 and updated in November 2017. This is NOT the latest IP Office release; the latest release is recommended for new development.