A fairly positive review, not unexpected though as the G1 broke so many barriers and the GH1 just takes it to the next level. I just received my GH1 yesterday (many thanks to Bill Wilby at
www.contactphotoarts.com). It will join my 2 G1's but I expect to sell off one of the G1's and replace it with the GH1. I tried HD video before (Canon HV20) and never really took to it, but amalgamating excellent stills with video capability really makes this the perfect camera setup for me.
I'm still going through the manual right now (and brushing up on manual settings for video capture) but this weekend I hope to have some better idea as the the possible (still images) differences between the GH1 and its older sister.
One thing you notice right off the bat is that the new lens is quite a bit heavier than the other kit lenses. It's not unmanageably weighty, although with the lens extended right out, it approaches an over balance point.
One really exciting thing for me is going to be using my Nikon fast glass 50mm f1.8, 85mm f1.4 and 300mm f4 for HD video. All on a single platform! Well done Panasonic!
Cheers,