NEW UI in Editor

Hello all,

It may sound silly, BUT is there a way to use the new UI with the Canvas in the Editor ?
I can use the Canvas correctly when I push the play button, BUT can I use the same structure in the Editor ?

Currently, I'm using OnSceneGUI to show my menu, but it's not that beautifull and it's more a time waste to positionnate everything on the right place.

Best regards,