Sometimes it is helpful to know what the differences between releases of Tcl/Tk are.
Perhaps you want to know how many releases back a feature is available.
Perhaps you want to know "What's new?" since your reference book was published.
These pages aim to quickly summarize the differences introduced
in each release of Tcl/Tk which are visible at the script level.
For further details, see the release announcements [http://www.tcl.tk/software/tcltk/relnotes/]
or the ''changes'' file in the Tcl/Tk distribution.
Please expand/correct these pages as necessary.
(Do I have to say that in a Wiki?)

**Tcl/Tk 8.5**
   * [Changes in Tcl/Tk 8.5.2] -- 2008-03-28
   * [Changes in Tcl/Tk 8.5.1] -- '''2008'''-02-05
   * [Changes in Tcl/Tk 8.5] -- 2007-12-20

**Tcl/Tk 8.4**

   * [Changes in Tcl/Tk 8.4.19] -- 2008-04-18
   * [Changes in Tcl/Tk 8.4.18] -- 2008-02-08
   * [Changes in Tcl/Tk 8.4.17] -- '''2008'''-01-04
   * [Changes in Tcl/Tk 8.4.16] -- 2007-09-21
   * [Changes in Tcl/Tk 8.4.15] -- '''2007'''-05-25
   * [Changes in Tcl/Tk 8.4.14] -- 2006-10-19
   * [Changes in Tcl/Tk 8.4.13] -- '''2006'''-04-19
   * [Changes in Tcl/Tk 8.4.12] -- 2005-12-03
   * [Changes in Tcl/Tk 8.4.11] -- 2005-06-28
   * [Changes in Tcl/Tk 8.4.10] -- '''2005'''-06-04
   * [Changes in Tcl/Tk 8.4.9]  -- 2004-12-07
   * [Changes in Tcl/Tk 8.4.8]  -- 2004-11-22
   * [Changes in Tcl/Tk 8.4.7]  -- 2004-07-25
   * [Changes in Tcl/Tk 8.4.6]  -- '''2004'''-03-01
   * [Changes in Tcl/Tk 8.4.5]  -- 2003-11-24
   * [Changes in Tcl/Tk 8.4.4]  -- 2003-07-22
   * [Changes in Tcl/Tk 8.4.3]  -- 2003-05-19
   * [Changes in Tcl/Tk 8.4.2]  -- '''2003'''-03-03
   * [Changes in Tcl/Tk 8.4.1]  -- 2002-10-22
   * [Changes in Tcl/Tk 8.4]    -- 2002-09-10

**Tcl/Tk 8.3**

   * [Changes in Tcl/Tk 8.3.5]  '''2002'''-10-18
   * [Changes in Tcl/Tk 8.3.4]  -- 2001-10-19
   * [Changes in Tcl/Tk 8.3.3]  -- '''2001'''-04-06
   * [Changes in Tcl/Tk 8.3.2]  -- 2000-08-09
   * [Changes in Tcl/Tk 8.3.1]  -- 2000-04-26
   * [Changes in Tcl/Tk 8.3]    -- '''2000'''-02-10

**Tcl/Tk 8.2**

   * [Changes in Tcl/Tk 8.2.3]  -- 1999-12-16
   * [Changes in Tcl/Tk 8.2.2]  -- 1999-11-04
   * [Changes in Tcl/Tk 8.2.1]  -- 1999-10-04
   * [Changes in Tcl/Tk 8.2.0]  -- 1999-08-17
   * [Changes in Tcl/Tk 8.1.1]  -- 1999-05-25

**Tcl/Tk 8.1**

   * [Changes in Tcl/Tk 8.1]    -- 1999-04-29

**Tcl/Tk 8.0**

   * [Changes in Tcl/Tk 8.0.5] -- '''1999'''-03-09
   * [Changes in Tcl/Tk 8.0.4] -- 1998-11-19
   * [Changes in Tcl/Tk 8.0.3] -- '''1998'''-08-10
   * [Changes in Tcl/Tk 8.0p2] -- 1997-11-25	???
   * [Changes in Tcl/Tk 8.0p1] -- 1997-11-07
   * [Changes in Tcl/Tk 8.0]   -- '''1997'''-08-18

**Tcl/Tk 7**

   * [Changes in Tcl/Tk 7.6/4.2] -- 1996-10-16
   * [Changes in Tcl/Tk 7.5/4.1] -- '''1996'''-04-21
   * -
   * [Tcl 2.1] -- '''1990'''-03-03

----
[Donald Porter]

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Commentary on individual changes also appears in
"[Advantages and disadvantages of different Tcl versions]".

See also: [Tcl Benchmarks]

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2008 - See http://tip.tcl.tk/311 for plans for upcoming releases.

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