CIPA sales numbers for November 2017 have been released, and show another decline in shipments when compared to 2015 and 2016.
The marketshare for mirrorless cameras remains at about 35% of total ILC segment. This number hasn't moved all that much over the last year or so. While Sony continues to develop and release cutting edge mirrorless cameras, they don't seem to be taking sales away from DSLRs.
The mirorrless marketshare likely won't see much movement until Nikon and Canon enter the prosumer full frame mirrorless space.
Total ILC shipments as of November 2017 show a very slight bump up of a few hundred thousand shipments over 2016, we'll have to wait for the December 2017 numbers to see if 2017 continues to show an increase in sales over 2016.