Sony IMX118CQT, 18.47MP/24fps BSI 1/2.3" CMOS sensor, next generation of the IMX078CQK 12.4MP that currently used in the Q:-
http://image-sensors-world.blogspot.com/2012/02/sony-announces-18mp24fps-bsi-sensor.html
So, the pixel count race has not yet stopped actually and now those small DC sensors continue to grow! If there is going to be a Q-02, this possibly the new sensor that fits the same image-circle size and it will have even a higher pixel count than the K-5! :-o
In reading the Image Sensor World blog at the same time, I've seen today's headline is about the unusual serious highlight blooming of the Fuji X10 sensor, see what DPR has investigated and found:-
http://www.dpreview.com/articles/3340468423/fujifilm-x10-orbs-investigated-does-the-firmware-fix-work
Oh, it's really terrible! :-{ Now, I am really satisfied with the weaker highlight preservation of my K-5, as there exists other camera on Earth which has even far more serious problem of this! :-o The above test shows that the new firmware is not going to help. It's really sad after all! At the end of the day, I am still asking the same question: Is firmware going to help for eliminating a *hardware* issue? >:-|