It is nice to see Samsung taking an effort to improve image quality rather than throwing out another new hi tech electronic gimmick that has nothing to do with image quality. Samsung is an electronic giant like Sony, knows a lot about sensors and electronics but has no root in the legacy of optics/SLR. Sony acquired Minolta and Samsung partner with Pentax. And they both partner with high end lens manufacturers. Sony has done a pretty good job so far. Samsung however has been lagging behind in image quality, but manage to use their electronic expertise to crank out hi tech gimmicks that appeal to the gadget lovers, so basically selling camera's specs.
So this seems to be a good new direction for Samsung, along with their NX10, a copycat of the micro 4/3s of Panasonic and Olympus, to strive for better cameras and better image quality. Some call these EVIL (Electronic Viewfinder Interchangeable Lens) cameras. It is perhaps the last phase of the digitalization of the old SLR world to complete the electronic age of photography, severing the umbilical tie to the old SLR.
One thing I do want to say about the new fast lenses found in compact PS. One should not confuse a fast compact lens to be equivalent to a fast D-SLR lens. A f/1.8 compact lens is no where near a f/1.8 D-SLR lens in terms of its brightness, quality, shallow depth of field, etc. There is a nice simple article that use simplified grade school single lens optics to explain the difference. Obviously the real lens is a lot more complicated consisting of multiple compound lens elements. But this is a good and simple way to illustrate the difference. This article illustrates mathematically how a compact lens can easily be about be 4 stops slower, need to magnify image/error 4 times more, has 4 times more DOF than a D-SLR lens with same f/number.
A bigger lens will have better quality, and a bigger sensor will usually need a bigger lens. This is inversely related to what people want, a small camera with compact lens but quality of a large D-SLR.