Eclipse Kepler 4.3 was released a few days ago which includes version 3.8.200 of the org.eclipse.jface.text plugin. Unfortunately my line number ruler patch did not make it into Kepler so I had to create a new version of the org.eclipse.jface.text plugin.
You can download the new version on its project website which is compatible with Eclipse Kepler 4.3. Install it manually or use the following update site: http://dev.cdhq.de/eclipse/updatesite/kepler/
In fact my plugin is the same as it is included in Kepler but with a fixed LineNumberRulerColumn class. For the word wrap plugin nothing has changed.