
Canon EOS R and its lenses.

Nikon Z6, left, and Z7.
Canon and Nikon have mirrorless cameras on the market now - Canon EOS R and the Nikon Z and Z7.
Although these cameras are smaller than a full-size DSLR, these still are substantial cameras. The size of some of the lenses are roughly equivalent to a large can of "chunky" Campbell's soup.
I was expecting these cameras and lenses to be smaller, but they aren't. I think that they'll attract buyers who are dedicated Canon and Nikon shooters, but I wonder if they'll attract newer photographers. Granted, both of their display areas were very crowded, so clearly people are interested.
Even so, the other mirrorless systems have fully developed systems. Right now, Canon and Nikon are launching with just four lenses each. Nikon has a 58mm f/1.2 Noct, but I bet the price prevents many people from buying it. Of the four Canon lenses, three are "L" lenses with prices running from $1,099-$2,999. That's a lot of money when the body is $2,299. The battery grip is $490. We're talking a lot of money to buy in.
The Nikon Z7 body goes for $3,399.95, and the Z6 body goes for$1,999.95. I think most will buy the cheaper body and put the money into the lens.
I got to toy around with an Olympus OM-D E-10 MkIII with one of the "Pro" lenses attached. That was a really sweet camera. The "Pro" lenses have this feature that allows you to switch instantly to manual focus by pulling backward on the focusing ring, revealing a distance scale.
The Sigma, Panasonic and Fujifilm booths were so packed that I never got close to the counter.