[http://sf.net/projects/tcl/files/Tcl/8.6.8/tcltk-release-notes-8.6.8.txt/view%|%Released]
December 22, 2017.

**Tcl Changes**

***Changes to Tcl Commands***

****Modified Behavior****

   * [array names] `-regexp` supports backrefs
   * [info object methods] includes mixins

----
**Tk Changes**
***Changes to Tk Commands***

****Expanded Syntax / New Options****
   * ''photo'' '''read''' now accepts files beginning with '''-'''

***Look and Feel***

   * Support multimedia keys on Windows [[[http://tip.tcl.tk/464%|%TIP #464]]]

***Modified Behavior***

   * [[[text]]] widget defaults to `-undo 0` [http://core.tcl.tk/tk/info/e9d042e4f219d006]

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**Changes to Bundled Packages**
***Updated packages***
   * [http] 2.8.12
   * [Itcl] 4.1.1
   * [Thread] 2.8.2
   * [sqlite] 3.21.0
   * [tdbc]* 1.0.6

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