BumpTop appears to be a rather novel and interesting approach to file management, harkening back to your actual messy desk, in all its actual disorganized glory. For those disinclined to watch the informative video, the nouveau desktop will treat windows and documents as though they are real documents, strewn on your desk. The virtualization of your messy workspace, however, allows for a number of novel combinations and interactions, along with a few that seem quite intuitive, like pinning a document to the "wall" or crumpling it up in advance of throwing it away.
Supposedly a full-blown OS built around this will be in the works if the money can be found.
Personally, as with writing things longhand, I relished the coming of the computer and the ways its rigid and hierarchical organizational methods simplified my life. My writing is illegible and my meatspace organization is... appalling.
Hooray computers, said in the timbre and meter of the Red Stripe beer guy.
Now, since I think there are too many people like me who have managed to make the flat, boring grid of modern file management work for them, I don't see this taking over the world. What I do see it as is the intermediate step where our computer desktop and physical desktop finally merge. It's already started, as I've seen lately touted a very advanced work table that is a pen-navigated monitor, but I'm thinking that, ultimately, we'll wind up with a holographic "monitor" that we can make as big or as little as we want and in which we'll be able to interact with our files, windows, and whatever in three true dimensions.
Which will be nice for the people who don't want to shell out for the direct neural interface...