I have shooted several hundreds of pictures from April (when I bought it); none with CA nor fringings I saw in some FZ10's pictures.
(I can send originals - let me the time to find them)
I print them "in the house" with an Epson Stylus Photo 830 or an HP DeskJet 970 Cxi, in A4 format, and look perfect (you can't see a pixel) - I've downloaded and printed FZ10 shoots without noticeable difference (2 Mp vs. 4 Mp).
I'm very interested in the FZ10 for his exposure controls, histogram, manual focus, dedicated ad-on lenses, and much more.
For me they are quite different, and very good, cameras.