Here is an article on the new Sony Second Generation sensor with a sample image comparing it to the First Generation sensor. It looks to be a marked improvement. The particular sensor is only a 10 MP sensor, but it would not be unreasonable to guess that the new technology will work its way into the rest of the Sony lineup. The question is when?
http://image-sensors-world.blogspot.com/2010/02/sony-cx-news-tells-about-new-products.html