There was this thread, regarding what people were looking for, in the GH3 (which, incidentally, I cannot find, anymore).
People asked for everything, from built in stabilizers, to a complimentary date with Megan Fox. Everything, except, everything realistic.
Anyways,I just read the review of the new Panasonic DMC FZ200. It has an insane f2.8 25mm to 600mm lens (though I am curious to know, why they don't have a lens for the GH2 or GH3, which does the same). Apart from this, it does the equivalent of 720p @ 120 fps. I am guessing, that, probably, the GH3 will do 120 fps, as well. Though, I wish, it does it at Full HD.
I guess, the next few weeks of Camera from the Panasonic stables will be a hint of the features on the Flagship GH3.