I'm not sure about this one. Contrary to what I expected, the aperture didn't only become variable but also wider, which allows for 45% more light entering the camera at it's widest compared to before. And while the variable aperture might not make a huge difference for photography, it could really be a big change for video, allowing to use much more natural shutter speeds. Whichever way it's going to be, the showcased video capabilities and sample photos of the keynote surely all where extremely impressive. Let's see how much of that will show up in real world tests. It might make quite a big difference after all...