I really think that in the next five years of so, m4/3 is going to seriously cut into Canikon's DSLR sales. Both seem afraid to "steal their own market share" by offering MIL cameras which can be serious alternatives to DSLRs. (No EVF, not even an optional one? Fail.) Moreover, m4/3 seems to be at a real sweet spot in terms of sensor size: small enough to allow bodies and lenses to be significantly smaller than DSLR ones, yet large enough to offer significant improvements over compact digicams. Not only that, m4/3 has been around long enough to have a real head start over newer MIL designs on developing a native lens lineup.
With the exception of the full-frame pro models, DSLRs (and their lenses) are needlessly big and bulky, thanks to their use of standards designed to enable coverage of a 24x36 image (which is not fully used in consumer-level DSLRs). I see such cameras as a historical accident whose time is about to end, and m4/3 is perfectly positioned to grab most of that market.
