Looks like Samsung's 3D Blu-ray players aren't the only ones coming in cheaper versions, as it's unveiled the new 680 Series and 490 Series plasma HDTVs. Both were shown off in Korea yesterday, though the US website only features a product page for the 50-inch PN50C680 so far, showing off its 1080p specs and DLNA access. You will give up a few features from higher end plasmas, which add picture-in-picture, widgets, a higher contrast ratio and slimmer designs to the mix. The PN50C490's situation is a bit m
