I am in the process of updating my AutoCAD History page after we just released the new AutoCAD 2017 Monday March 21, 2016. AutoCAD 2017 was codenamed Nautilus in alpha and beta testing prior to being officially released publicly.

Update: My good friend Vladimir Michl of http://www.cadforum.cz spotted the error in my accounting he said AutoCAD 2017 should be 31 not 32 because I copy pasted an error and 2016 should have been release 30. While he is absolutely correct, I could go back and say R14.01 with its own codename of pinetop was technically a release adding networking and so much more bringing 2017 back to release 32, but I won’t. Thank you for keeping me honest Vladimir.

• AutoCAD 2017 March 2016 codename Nautilus (Release 32 31)
• AutoCAD 2016 March 2015 codename  Maestro (Release 31 30)

• AutoCAD 2015 March 2014 codename Longbow (Release 29)

• AutoCAD 2014 March 2013 codename Keystone (Release 28)

• AutoCAD 2013 March 2012 codename Jaws (Release 27)

• AutoCAD 2012 March 2011 codename Ironman (Release 26)

• AutoCAD 2011 March 2010 codename Hammer (Release 25)

• AutoCAD 2010 March 2009 codename Gator (Release 24)

• AutoCAD 2009 March 2008 codename Raptor (Release 23)

• AutoCAD 2008 March 2007 codename Spago (Release 22)

• AutoCAD 2007 March 2006 codename Postrio (Release 21)

• AutoCAD 2006 March 2005 codename Rio (Release 20)

• AutoCAD 2005 March 2004 codename Neo (Release 19)

• AutoCAD 2004 March 2003 codename Reddeer (Release 18)

• AutoCAD 2002 June 2001 codename Kirkland (Release 17)

• AutoCAD 2000i  July 2000 codename Banff (Release 16)

• AutoCAD 2000 March 1999 codename Tahoe (Release 15)

• AutoCAD R14 February 1997 codename Sedona and Pinetop for update 14.01 (Release 14)

• AutoCAD R13 November 1994 (Release 13)

• AutoCAD R12 June 1992 (Release 12)

• AutoCAD R11 October 1990 codename Let it Be (Release 11)

• AutoCAD R10 October 1988 codename Abbey Road (Release 10)

• AutoCAD R9 September 1987 codename White Album (Release 9)

• AutoCAD 2.6  April 1987 (Release 8)

• AutoCAD 2.5 June 1986 (Release 7)

• AutoCAD 2.1 May 1985 (Release 6)

• AutoCAD 2.0 October 1984 (Release 5)

• AutoCAD 1.4 October 1983 (Release 4)

• AutoCAD 1.3 August 1983 (Release 3)

• AutoCAD 1.2 April 1983 (Release 2)

• AutoCAD 1.0 December 1982 (Release 1)

Cheers,
Shaan

Update: Autodesk Founder John Walker just emailed me two more AutoCAD code names.
”Release 10 code name Abbey Road
Release 11 code name Let It Be”