To the simpletons who say " I'm glad apple won because now it will stimulate innovation.." . This won't period this will kill design, why? because just like allot of other devices there is a basic and core criteria that to deviate from is to make the item hugely expensive or to not be ergonomic in the least. there's a reason why minivans , pick-ups and compact cars all look almost the same... cost, ergonomics and in this case, aerodynamics, interior space and aesthetics all play a part.
The human hand has a range of sizes, so for the most part you have to define your shape to fit as many of those hands , hence an averaged number used across the board by most companies, there's the dimensions issue understood and taken care of. You have X number of layers to make up a working smart phone, would be horrendously expensive so there's the thickness issue taken care of. Sharp edges on anything mean poor ergonomics, possible cuts and tears and stress points, hence round edges. the only thing that you really have any say over is external input and output ( buttons, speakers and jack points.), which is where Apple and Samsung differ.
Unless there is a fundamental change in technology that does away with hand held, rigid screen I/O, this ruling is going to make any movement in design almost moot.