Okay, this is an intervention. We've got to get over this "thing" that seems to be developing about these new Panasonics. They're very nice prosumer digicams (as are several others with similar specs) but they're not life-changing paradigm shifts.
First, even the new image-stabilization model isn't a true DSLR -- it's just an "SLR-like" electronic-viewfinder camera, like many others. Electronic viewfinders are okay, and a lot of people are very satisfied with them -- but a 230,000-pixel EVF (which is what the Panasonic has) isn't going to provide nearly as detailed a view as a true optical DSLR or a true optical-finder RF camera.
That alone is one good reason why the Panasonic isn't going to drive the Canon 20D and Nikon D70 off the market -- some people really do need an optical viewfinder, either through-lens, as on a DSLR, separate, as on some other digicams and, in a more sophisticated form, in the Epson R-D 1.
Another reason is that some people really need interchangeable lenses, too. The Panasonic's 35-420mm equivalent is impressive, but a lot of us need to shoot wider than 35mm, and/or faster than f/2.8 (the Pana's maximum aperture at wide position; at tele position, it slows down to f/3.7.) True, anti-shake (as built into the Pana)
partially compensates for slow maximum apertures by allowing you to shoot at slower shutter speeds without worrying about camera movement, but it doesn't do anything to stop
subject movement; sports and action shooters still are going to need their f/2.8 teles and f/2 or f/1.4 shorter lenses.
[I'm even enough of a jerk to question whether the fact that Panasonic paid to be able to engrave "Leica" on their lens makes it a "Leica DSLR," any more than the fact that Sony likewise licenses the Carl Zeiss name for some of their prosumer cameras makes them "Zeiss DSLRs." But hey, as long as the lens is good, who cares? I'm not questioning the Panasonic lens's quality, only its flexibility.]
Noise is another issue for some people: true, it can be masked in post-processing, but there's no way to put back the image detail that was obliterated by the noise in the first place, so it's better to have a lower-noise image to begin with. Of course, sensor size isn't an infallible predictor of noise level, but just for the record, the Panasonic's sensor is much
smaller than that on a typical DSLR -- 5.32 x 7.18 mm, vs., say, the 15.6 x 23.7mm "APS-C"-size sensor used in the Nikon D70 and the R-D 1.
So while these new Panasonics certainly sound like great choices for anyone who's looking for an EVF digital camera, I certainly don't think they're going to be driving other camera categories off the market and onto the eBay bargain bin -- any more than the similarly-featured Sony and Konica-Minolta prosumer cameras have done already.
In fact, one of the digital-camera news sites was saying last week that according to a recent industry survey, DSLRs are by far the fastest-growing digital category, and you have to figure that many of those buyers are coming
from fixed-lens EVF cameras.
Personally, I'm glad that I can ignore all those trends, since I only like to use rangefinder cameras!