This is the new RGBW pixel array of the patented Panasonic sensor.
Panasonic patented a new RGBW sensor design (Click here to see the document). It adds a White pixel on the usual Red-Green-Blue array. This should increase the dynamic range of the image. I heard from my sources that many companies are working on such an array and it is very likely that it is going to be used first in compact cameras.
Olympus also issued a new patent for 14mm, 16mm, 17mm and 22mm f/2.8 pancakes (Click here to see it). I believe the 14-16 and 22mm lenses are just modifications of of the already released 17mm f/2.8 pancake. If Olympus really plans to do such pancakes they should be at least as fast as the superb Panasonic 20mm f/1.7 pancake!
As usual with patents keep in mind that most of them are here just to protect intellectual propriety. A company may not use them at all in a real product!