It is a whole new interface, but it is in wallet and multi-platform etc.  Kind of like a cross between the Steam Desktop and World of Warplanes clients.  Its not just a reskin of the old QWidgets based wallet.  Its all new and makes doing some more complex UI things easier, touch support on everything, etc.

edit: I know I'm talking about it vaguely etc., just hold onto your hats and it'll be in your hands soon enough.  It'll give us something that really sets us apart and can be marketed etc. and is kind of like a little portfolio item for me.