Given that the original M flopped in the US, Canon may feel that the M2 is not attractive enough for the American market. I'm confident that the articulated screen and sensor from the 70D (or at least their technologies) will make it in to a premium mirrorless camera next year. Its just such an obvious step for Canon to take.
Their may be 1 more generation left in DSLRs but with EVFs offering features that OVFs can't the mirror's days are looking numbered.
The EOS M is selling very well in USA now. In fact, much better than Nikon's 1 offerings.
As for EVFs... until they can offer the same quick response, dynamic range and brightness as OVFs, mirrorless options are no-go for me. The fact that DSLRs outsell mirrorless cameras by 9.5:1 (8.5 in Europe), it appears that most folks agree with my assessment.