Actions for the Legacy GUI are in the GUI, GUIElement and GUILayout categories. They are not related to the new UI at all.
The new UI is simply called "UI". It was originally termed as uGUI and so we named the first actions and integration accordingly, but uGUI was dropped and the API is just "UI" for the new ui stuff. It is not related to the legacy GUI (which the editor is built in). Thank Unity for the confusing changes during 4.6 beta. =)
We have yet to produce actions and integration coverage for the entire new UI.