I'm thinking that the price of 3d TVs, glasses, cameras, etc will fall over time as the technology gets cheaper and expect Blu-rayesque results from this, that it will be kind of a big thing, but not overwhelmingly great for Sony.
Also, the 3d push is a pretty smart move, now that blu-ray is the standard for HD storage, 3d movies will basically require blu-ray, so when 3d grows, so will blu-ray.