As of 3.4, temporary annotations are no longer discolored in the editor's overview ruler. There were many complaints
that the color was computed by discoloring the color set on the General > Editors > Text Editors > Annotations preference page. Clients that nevertheless
want to stick to the old behavior can use org.eclipse.jface.text.source.OverviewRuler.OverviewRuler(IAnnotationAccess, int, ISharedTextColors, boolean)
to create the overview ruler.
The IDE global actions for Delete, Rename, and Move now use LTK so they can participate in the refactoring support. These actions now open the refactoring dialog which includes the preview button. These actions will revert to their old behaviour if shipped without LTK support.
The passwords stored with the CVS integration would have to be re-entered as the CVS client switched to a new secure storage back end. On the plus side, the CVS integration now stores passwords in an encrypted form.