For those of you doubting the quality of the Leica M8 you may wish to read this article by Dick Arentz published in Range Finder magazine.
As it happened I shot an M8 today and it is a terrific camera, so I don't think Leica has mis-stepped here.
Leicas are expensive instruments, and have always had a limited market due to that expense. But the Leicaphile knows what non Leica users don't; the cameras produce distinctive looking images and the quality of their products are unsurpassed in many ways. Their are no MF range finder cameras, other than the Mamiya 7, that can really hold a candle to the quality that the Leica glass and cameras can produce and this quality extends equally well to the M8.
IMO, the M8 will be a success, in as much as any Leica RF can be. IOW, not everyone will be wearing them but those that can afford the Leica will find their investment worth while and rewarding.