Interesting discussion.
Ricoh's limited presence in the States is a potential problem, especially when it comes to service and support. Only the Caplio 500G wide seems to be officially distributed here, and only through surveying and engineering supply companies. I would probably get a second-party warranty with any other model.
Having been in ebay bidding battles for GR-Ds and GR-series film compacts, I'll assert they hold their value better than the majority of digicams. (File that under "dam[n]ing with faint praise" but the fact is they've got an enthusiastic following for a small camera company.)
We won't know about the presence or absence of noise in the new model until it hits the street. Two observations:
* The GRD can certainly perform in dim lighting.
http://forums.dpreview.com/forums/readflat.asp?forum=1013&thread=22093532
http://picasaweb.google.com/Cristian.Sorega/People
http://flickr.com/photos/88545034@N00/
* With active anti-shake, the GX100 will allow extended hand-holding at lower ISOs and the lens is relatively fast at the wide end, so the noise question only revolves around whether they're overreaching to hit the 10-meg mark.
Ricoh has adopted DNG-format raw, so conversion is unnecessary. The bigs have yet to follow suit–shame on them.
The optional EVF is a brilliant solution in a marketplace that has all but eliminated in-camera optical viewfinders (which admittedly are crude approximations on cameras not named "M8"). Nobody has made a zooming auxiliary optical viewfinder in decades, and making one that worked automatically (and corrected for parallax in the process) would be a whopping technological challenge that an EVF renders moot. It just needs to be bright and sharp. Tiltable? Better still.
For me, the overarching point is that this camera *isn't* for everyone, but instead seems particularly well-suited to lightweight backpackers who want a serious, compact landscape camera. I couldn't care less about owning a slow, extended-range zoom when I can have true wide angle instead. It still zooms to an ideal portrait length.
What's that sound? It might be the GX100 and the DP1 fighting in the background for a shot at my wallet. I love vaporware. ;-)