Below is a full table of all the Mac OS release dates to-date. You can also find a list of iOS and watchOS release dates.


Classic OS

OS Version Date
System Software 1.0 January 1984
System Software 1.1 May 1984
System Software 2.0 April 1985
System Software 2.1 September 1985
System Software 3.0 January 1986
System Software 3.2 June 1986
System Software 3.3 January 1987
System Software 4.0 March 1987
System Software 4.1 April 1987
System Software 5.0 October 1987
System Software 5.1 November 1987
System Software 6.0 1988
System Software 6.0.1 September 1988
System Software 6.0.2 late 1988
System Software 6.0.3 March 1989
System Software 6.0.4 September 1989
System Software 6.0.5 March 1980
System Software 6.0.6  
System Software 6.0.7 October 1990
System Software 6.0.8 late 1990
System Software 7.0 May 1991
System Software 7.0.1 October 1991
System Software 7.1 August 1992
System Software 7.1.1 October 1993
System Software 7.1.2 March 1994
System Software 7.5  
System Software 7.5.1 March 1995
System Software 7.5.2 August 1995
System Software 7.5.3 January 1996
System Software 7.5.4  
System Software 7.5.5 September 1996
Mac OS 7.6 January 1997
Mac OS 7.6.1 April 1997
Mac OS 8.0 July 1997
Mac OS 8.1 January 1998
Mac OS 8.5 October 1998
Mac OS 8.5.1 December 1998
Mac OS 8.6 May 1999
Mac OS 9.0 October 1999
Mac OS 9.0.2  
Mac OS 9.0.3  
Mac OS 9.0.4 April 2000
Mac OS 9.1 January 2001
Mac OS 9.2 July 2001
Mac OS 9.2.1 August 2001
Mac OS 9.2.2 December 2001

Mac OS X

OS Version Date Notes
10.0 (Cheetah) March 2001  
10.0.1 April 2001  
10.0.2 May 1, 2001  
10.0.3 May 9, 2001  
10.0.4 June 2001  
10.1 (Puma) September 2001  
10.1.1 November 2001  
10.1.2 December 2001  
10.1.3 February 2002  
10.1.4 April 2002  
10.1.5 June 2002  
10.2 (Jaguar) August 2002  
10.2.1 September 2002  
10.2.2 November 11, 2002  
10.2.3 December 2002  
10.2.4 January 2003  
10.2.5 April 2003  
10.2.6 May 2003  
10.2.7 September 2003  
10.2.8 September 22, 2003  
10.3 (Panther) October 2003  
10.3.1 November 2003  
10.3.2 December 2003  
10.3.3 March 2004  
10.3.4 May 2004  
10.3.5 August 2004  
10.3.6 November 2004  
10.3.7 December 2004  
10.3.8 February 2005  
10.3.9 April 15, 2005  
10.4 (Tiger) April 29, 2005 Dashboard and Spotlight show up
10.4.1 May 2005  
10.4.2 July 2005  
10.4.3 October 2005  
10.4.4 January 2006 First public Intel Mac OS X
10.4.5 February 2006  
10.4.6 April 2006  
10.4.7 June 2006  
10.4.8 September 2006  
10.4.9 March 2007  
10.4.10 June 2007  
10.4.11 November 2007  
10.5 (Leopard) October 26, 2007 Time Machine and Spaces show up
10.5.1 November 2007  
10.5.2 February 2008  
10.5.3 May 2008  
10.5.4 June 2008  
10.5.5 September 2008  
10.5.6 December 2008  
10.5.7 May 2009  
10.5.8 August 2009  
10.6 (Snow Leopard) August 28, 2009 First Intel-only Mac OS X
10.6.1 September 2009  
10.6.2 November 2009  
10.6.3 March 2010  
10.6.4 June 2010  
10.6.5 November 2010  
10.6.6 January 2011 Mac App Store launches
10.6.7 March 2011  
10.6.8 June 2011  
10.7 (Lion) July 20, 2011 RIP Rosetta; Distributed primarily through the Mac App Store, with an inflated flash drive alternative
10.7.1 August 2011  
Steve Jobs dies October 5, 2011  
10.7.2 October 2011 iCloud launches
10.7.3 February 2012 Mountain Lion’s Gatekeeper added
10.7.4 May 2012  
10.7.5 September 2012  

OS X

10.8 (Mountain Lion) July 25, 2012 Drops “Mac” from name and ceases all distribution via physical media
     
10.8.1 August 2012  
10.8.2 September 2012 FB is now integrated
10.8.3 March 2013  
10.8.4 June 2013  
10.8.5 September 2013  
10.9 (Mavericks) October 22, 2013 Major performance improvements, and Maps + iBooks
10.9.1 December 2013  
10.9.2 February 2014  
10.9.3 May 2014  
10.9.4 June 2014  
10.9.5 September 2014  
10.10 (Yosemite) October 16, 2014 Total redesign + extensions
10.10.1 November 2014  
10.10.2 January 2015  
10.10.3 April 2015 Photos for OS X released
10.10.4 June 2015  
10.10.5 August 2015  
10.11 (El Capitan) September 30, 2015 Refinements to Yosemite
10.11.1 October 2015  
10.11.2 December 2015  
10.11.3 January 2016  
10.11.4 March 2016  
10.11.5 May 2016  
10.11.6 July 2016  

macOS

10.12 (Sierra) September 20, 2016  
10.12.1 October 2016  
10.12.2 December 2016  
10.12.3 January 2017  
10.12.4 March 2017  
10.12.5 May 2017  
10.12.6 July 2017  
10.13 (High Sierra) September 25, 2017  
10.13.1 October 2017  
10.13.2 December 2017  
10.13.2 Suplemental January 2018