While the MacBook is one of the products covered by this patent, it is in fact the iPod that is the design in focus. The thin sharp design, shown below, appears to reflect a future iteration of the iPod Classic - being that it still retains the classic iPod click-wheel.
Apples patent states that the sheet metal may be formed in such a way that the final part looks like it was machined down from a large thick slab of material. By utilizing sheet metal, the overall cost of the part can be reduced.
While the new process will apply to a plethora of future devices on the drawing board, Apples mention of a television is perhaps the one that we all secretly long for. Thats for another day. For now, its the unibody iPod Classic with a very cool aluminized makeover that Apple is focusing on.