I'm sure this camera will turn out some stunning images and it will be tempting on all sorts of levels. If I was somehow dis-satisfied with my current gear and looking for a new SYSTEM, I'd seriously consider freeing up some money, selling some gear, whatever, to get it. But I'm not someone who uses the 50mm focal length much at all (and I already have this covered well enough for my needs with a very nice f1.4 m43 lens) and I don't see much advantage of an effective 90mm lens at f2.4 with a better sensor over an effective 90mm lens at f1.8 with a lesser sensor (at least for someone like me who doesn't care about macros). To me, the real benefit of this system, at least initially, would be the 28mm at f2 with an incredible APS sensor (I'm assuming it will be incredible). THAT would be nice and would probably get a lot of use. And if it has fast AF and can do a couple of other tricks, it might even supplant my X100. But I have several very good options at the 28mm focal length and another excellent option at the 24mm focal length. And with m43 I've got a host of wide angle options (which is what I shoot a disproportionate percentage of the time). The Fuji, in the near term, would just add a great 28. In by far the largest form factor camera I'd own - the X100 is currently my largest camera. And I don't like big cameras or lenses! And I just can't see spending over $2000 on that. I looked at a GXR with the 28 briefly and I didn't feel like THAT added enough to what I already own to spend $900 on that, and this won't be ALL that much better... And, although I don't use them often, having the option of a couple of zooms (both the 14-150 and 9-18) can occasionally be invaluable with my m43 gear, and I can't see how Fuji would ever go there with a hybrid viewfinder, which has already got to be a huge technical challenge with three primes.
I'll be curious to see where this Fuji system goes in time. Will they add different body options? Maybe something with a flip screen? Will the hybrid viewfinder be a hindrance to a more versatile system? Will they add a couple more key lenses (probably yes on this one)? But, for now, it appears to mean spending well over $2000 for a very nice camera with a very nice 28mm lens and I just don't see that happening. If it could REPLACE a big chunk of my existing system, it might have a chance, but at this point it would just add another camera with one lens I know I'd love, but if it didn't enable me to get rid of at least an equal amount of stuff, I can't see doing it. And I don't see that happening with this initial release.
So I suppose I'll watch this with the same semi-interested eye I've watched the Nex system with for a while now (since my dalliance with the Nex 5 about a year ago). A LOT of potential, but not the right combination of size, weight, and IQ for me at this point. The more stuff other companies put out, the more I keep coming back to m43 as the right set of tradeoffs for me. I'm glad I don't have very high pixel peeping needs/standards - it would make life much more complicated and expensive!
-Ray