If you were using any custom implementations based on this module, e.g. you were writing your own javascript interactions with Drupal.settings.dependentfield, these implementations will break. The data structure for this javascript setting has changed.
Now you can choose a selection field as a parent field.
Several issues have been fixed as yet. The module javascript code recognizes form items only when they are from class 'form-item'. Therefore, now the module adds the 'form-item' class to fields that have a ['#theme'] in their array.
adding a fix for viewing a node. Now when a field is being hidden during view operation, its dependent field are automatically being hidden too. see issue http://drupal.org/node/240591
fixes the bug in IE6 causing the error message: Error Message: 'parent_forms[...].children_arr' is null or not an object
The problem is due to a bug in the attr function which return "undefined" when calling attr("0") even if it is defined.