Well, most of the 40+ pages were legacy info about the M7/MP, lenses, accessories, etc.
Still, I agree it looks very plausible. It would have been quite time-consuming to go through an existing brochure and search/replace out all the "M8" references and replace them with "M9" (although let's face it, most Leica M users are members of the leisure classes and have plenty of spare time to amuse themselves however they please.)
What I find most convincing about it is that if this WERE simply a fanboy fantasy, I suspect s/he would have fantasized more mouth-watering specs than a top ISO of 2500 and a viewfinder magnification of 0.68x! In other words, it's just good enough to be true, but not too good to be true.
Anyway, now we've got something to study between now and Wednesday. The next really interesting questions will be availability date and (ulp!) price...
PS -- If the brochure is accurate, its omission suggests that the M8 is no more. Sic transit gloria mundi...