Below are the release dates for the various versions of the Unity editor.
| Version | Date |
|---|---|
| 4.3.4 | 29 January 2014 |
| 4.3.3 | 13 January 2014 |
| 4.3.2 | 18 December 2013 |
| 4.3.1 | 28 November 2013 |
| 4.3.0 | 6 September 2013 |
| 4.2.1 | 2 September 2013 |
| 4.2.0 | 22 July 2013 |
| 4.1.5 | 7 June 2013 |
| 4.1.4 | 6 June 2013 |
| 4.1.3 | 27 May 2013 |
| 4.1.2 | 21 March 2013 |
| 4.1.0 | 14 March 2013 |
| 4.0.1 | 11 January 2013 |
| 4.0.0 | 14 November 2012 |
| 3.5.7 | 13 December 2012 |
| 3.5.6 | 8 September 2012 |
| 3.5.5 | 8 August 2012 |
| 3.5.4 | 1 August 2012 |
| 3.5.3 | 22 June 2012 |
| 3.5.2 | 15 May 2012 |
| 3.5.1 | 2 March 2012 |
| 3.5.0 | 14 February 2012 |
| 3.4.2 | 5 November 2011 |
| 3.4.1 | 20 September 2011 |
| 3.4.0 | 26 July 2011 |
| 3.3.0 | 1 March 2011 |
| 3.2.0 | 10 February 2011 |
| 3.0.0 | 27 September 2010 |
| 2.6.1 | 2 December 2009 |
| 2.6.0 | 28 October 2009 |
| 2.5.0 | 18 March 2009 |
| 2.1.0 | 24 July 2008 |
| 2.0.2 | 30 January 2008 |
| 2.0.1 | 5 November 2007 |
| 2.0.0 | 10 October 2007 |
| 1.6.2 | 1 May 2007 |
| 1.6.1 | 30 January 2007 |
| 1.6.0 | 28 November 2006 |
| 1.5.1 | 27 September 2006 |
| 1.5.0 | 16 June 2006 |
| 1.2.2 | 29 March 2006 |
| 1.2.1 | 17 January 2006 |
| 1.2.0 | 21 December 2005 |
| 1.1.1 | 26 September 2005 |
| 1.1.0 | 23 August 2005 |
| 1.0.4 | 15 July 2005 |
| 1.0.3 | 13 July 2005 |
| 1.0.2 | 6 July 2005 |
| 1.0.1 | 30 June 2005 |
| 1.0.0 | 6 June 2005 |
Originally, the iOS build target was provided by a separate version of the editor, Unity iPhone, but this feature was integrated into the main editor in Unity 3.0. The release dates for Unity iPhone versions are given below.
| Version | Date |
|---|---|
| 1.7.0 | 2 April 2010 |
| 1.6.0 | 4 March 2010 |
| 1.5.1 | 20 November 2009 |
| 1.5.0 | 25 August 2009 |
| 1.0.3 | 17 June 2009 |
| 1.0.2 | 27 April 2009 |
| 1.0.1 | 16 December 2008 |
| 1.0.0 | 3 October 2008 |