Using this page to "crowd-source" some text for http://www.tcl.tk/software/tcltk/8.6.html .

**Built-in PNG Image Support**
Photo images now support read/write in the '''PNG''' format, with
the ability to set the alpha channel.

**Busy Windows**
New command '''tk busy''' is a variant of '''blt::busy''' that lets
the interactivity of windows be suspended and restored as required
by the needs of the program.

**New Font Selection Dialog**
**Angled Text**
**Moving Things on a Canvas**
**Other New Features**
Text widget cursor control, more window manager hints, and a collection of
modernizations in appearance and function.  See [Changes in Tcl/Tk 8.6] or
[http://tip.tcl.tk/311%|%TIP #311] for the complete list.