The video on top shows the first Panasonic GH2 vs Panasonic GH1 (and vs Panasonic TM750) comparison. Skip the first two minutes of the video to see the comparison only. It’s very difficoult to judge the images on youtube and without knowing the image processing work they have done.
Still no news about the GH2 availability. Adorama is accepting preorders, BHphoto says the GH2 will be in Stock in December and Amazon removed the preorder option.
Engadget posted a Panasonic Lumix GF2 preview: “Panasonic has ticked the major boxes of reducing bulk and including HD video (at 60fps, no less) while seemingly sacrificing little of what made the GF1 such a richly appealing camera in the first place. Our biggest complaint, therefore, has to do with the GF2’s January release date — it’s too far away, dammit!” They also made a GF2-GF1 size comparison.
The GF2 is listed on Amazon but without any price indication.