The Leica M 240 is the new Leica (people were calling it the M10 before it was released).
24 MP CMOS sensor with no AA filter + live view and focus peaking + external EVF via hot shoe.
The thing is, while high end DSLRs can approach the IQ of the M system, they require careful matching of lens to body.
D800E + Nikon 50mm 1.2 or Zeiss 50 is being touted as "close" to M9 + Summicron 50 but you also have the weight and bulk to consider.
I hate shooting street in dangerous places where Canon or Nikon shouts cop/reporter to the locals and I have to rush shots or get the hell out of the area quickly (and yes, I have used 5D MK3 + 40mm pancake but it is still too awkward for me).
This hasn't happened when I shoot with the Fuji.
If Fuji had a FF equivalent, I'd go with it but right now there is only Leica or this new Sony in the small FF game.