The folks at Lensvid have released their annual “What Happened to the Photography Industry in 2018?” infographic.
It shouldn't be a surprise that camera and lens shipments continued to fall in 2018 by 24% and 7% respectively.
As far as camera sales splits go, DSLRs and mirrorless saw increases of share in 2018, at the expense of compact cameras. Mirrorless only saw a modest 100,000 unit increase in sales in 2018 compared to 2017, while DSLR shipments fell by about a million units.
I think we're nearing the end of the slide and the industry will flatten out in the next year or two, even if Canon thinks we're going to see a further 50% drop in the marketplace.
The EOS R, EOS RP, and all the new RF lenses should help with Canon's sales numbers in 2019, but there doesn't seem to be much in the way of new DSLRs coming, so a further dip in those shipments is likely.