The 7 stops of stabilisation will be very handy for wildlife work, but also for long handheld exposure on the street and at night. The smaller size of long lenses and the lighter weight bodies in m4/3 really works well for wildlife shooters.
While I am primarily a Canon shooter, I have sold about a dozen EOS lenses that I don't use frequently anymore, while I wait to see what else Canon will introduce this year re IBIS and more than one memory card.
I also own several lenses ( 7mm -> 400mm ) and bodies in the m4/3 system so I am very interested in this new Olympus body, even at the high price mentioned. But the price still seems steep when one can get the OM-D EM1 Mark II for half that price and less physical weight.