There are a few high-ISO night-time samples here, which don't look too bad:
http://www.imaging-resource.com/PRODS/N ... ONJ1A7.HTMInteresting to see Nikon reviving the same sensor format as the Kodak DCS 420! In a much smaller body. Nine more megapixels. Shoots at 60fps as well, and can do high-speed movies - short ones at 640x480, 40fps - which is something that's always fascinated me. The lens line-up seems a bit meh. I wonder how the dynamic range will turn out. I mentally imagine bright skies turning into patches of whiteness, but perhaps it has a clever automatic HDR mode or something along those lines. Curiously the budget model, the J1, looks really nice, a bit Leica-ish from the front, whereas the pro-spec V1 has an ugly-looking moulded hump for the EVF that just looks ugly and wrong. I can imagine the tiny sensor limiting future expansion of the system.
I've just come back from holiday, and it was a bind carrying around my 5D. Not so much the weight, but the awkward shape, which defied my attempts to fit it neatly into a small shoulder bag. It kept banging around and accumulating scratches and crushing things, so I'm interested in something smaller, although based on the reviews and samples I'd buy an X100. Mainly for the lens and the relatively flat shape. Or I'd buy a better bag.