Matthew Weier O'Phinney has posted a tutorial to his blog that shows how to implement the dijit.Editor (a dijit helper that didn't make it into the current release of the Zend Framework).
We're getting ready to release Zend Framework 1.6.0.
However, one important Dijit had to be omitted from the release as I was not able to get it working in time: dijit.Editor.