With the lenses confirmed, I think that being somewhat effusive is called for. Sony's NEX system has been around for well over a year with only a single good lens. Micro 4/3 is nearing its fourth birthday and only in the last few months has it finally started releasing some good glass. Fuji's X Pro system will be less than a year old and have eight, count'em eight, lenses available. And if current lenses are any indication, they will be high-quality glass ready for even top-pro applications. Other camera companies should be ashamed.
I wish that the X Pro 1 wasn't such a mess in some truly critical ways, because I would jump on that train in a heartbeat. But as it is, I already have a lot of Micro 4/3 gear, the lenses are finally up-to-snuff, and the new Olympus E-M5 is, FINALLY, the camera that I wanted two years ago as a follow-up to the GF1. Granted, it's how good the GH3 is that will be the final deciding factor in whether I stick with the system, but the E-M5 is a great start.
This is about Fuji, though, and they deserve congratulations. A fantastic start to a nascent system.