It looks like the Canon EOS R in photographers hands and is being used around the world. Below we have an image of what looks to be the Canon EOS R with the BG-E22 battery grip.
The full specifications for the Canon EOS R have leaked out ahead of this week's launch via an official Canon PDF.
Also looks like a mode dial on the top left?
This is probably a beta camera.
I do not think that this is genuinely a gripped EOS R, as I doubt they would allow a pre-production body out to a test photographer without removing the identifying markings.
Also, the placement of the shutter button is off (or out of view?).
That also looks like one of the trains on the LIRR (Long Island Rail Road) in NY.
Whoever took that picture is using a crappy camera phone.
Also that looks like Ken Wheeler...