Android N has been here for a few days now. Of course it would release a few days before Samsung's new flagship releases with Marshmallow. Still this is just a developer preview and should be treated as such. Android N is pretty darn stable and is chock full of new but small features.
One such feature is the ability to drag and drop text between apps. This allows for some serious multitasking as you would be able to go back and forth between apps without having to close one and open another. Head to the link below to see it in action.