On the eve of Christmas, Nokia applied for a patent for a modern communicator-type device that folds out into four attached pieces, most probably two for a keyboard and two for the screen.
However, the function of this device has been clear yet. Though Nokia included media, games, and communication in their application, but that's not a hint so much as the company merely covering their bases. It would be great achievement that by Folding gadgets to save pocket space without losing functionality, but the design could easily end up clunky if it's not done just right.