I am DEFINITELY saving my pennies. I own a Canon 20D, which is a fine piece of work. However, what I want next is not a full-frame digital SLR but a compact rangefinder that will shoot digital images but use my fabulous Voigtlander and Leica lenses. And I will go on shooting film side by side for quite a while, too.
I am a big fan of available light, and my fast lenses combined with an excellent digital sensor (which I'm sure the Leica will have) will be awesome. I also am a wideangle to normal person. I could wish for a full-frame Leica sensor, but the fact is that full frame sensors with today's technology may not get the best results with wideangle lenses. Some improvements will come in new lenses, like the new wideangles Leica seems to be promising. Others will be in improved sensors. Meanwhile I will use my ultrawide Voigtlander lenses on my film bodies when I want the ultimate in ultrawide and on the Leica digital when I can deal with the 1/3 multiplier (my 12mm will be a 16mm on a Leica digital).
To give Canon credit, their SLRs, at high ISO speeds, produce fantastically good images even at ISO 3200. But... think what you could be getting if that kind of digital sensor technology is married with world-class high speed lenses, like Leica's 35mm or 50mm ones.
And, again, I would rather have an unobtrusive, quite, small, compact rangefinder than an SLR.