PhotoWebExpo has posted an interview with the Head of Product and Consumer Expertise at Canon Russia, while most of it is what you'd expect in a Canon interview, there are some good nuggets of information.
The original interview is in Russian, so obviously I have used Google Translate here. Below are a few answers that are probably worth noting.
Which type of photographers is the Canon EOS R3 intended for?
Canon is aiming this camera at professionals and advanced amateurs. The Canon EOS R3 is not intended to replace the Canon EOS-1D X Mark III.
The camera will be intended for wildlife, sports, racing, and photojournalism.
The camera will be smaller than the EOS-1D X Mark III as well.
Why an EOS R3 and not an EOS R1?
Canon says this camera is a new line for the EOS R system. It will be slotted between the EOS R5 and a future flagship camera, the EOS R3 is not the EOS R flagship.
Will the Canon EOS R3 get a new sensor?
In case you missed it, the EOS R3 will be the first Canon camera with a stacked backside-illuminated sensor. It is the first of its kind developed by Canon for consumers.
Is this Canon's first stacked sensor?
This is actually the second stacked sensor from Canon, the PowerShot G7X Mark III has a 1″ stacked sensor. This will be the first full-frame stacked sensor from Canon.
Will Canon share the RF mount with other manufacturers?
It doesn't look that way. Canon is likely to keep the mount a closed system, so the third parties will have to reverse engineer everything to make RF mount lenses to utilize the new technologies available in the RF mount.
What's the future of the EOS M system?
Canon couldn't comment on the future of the system, but in this interview, the EOS M system was called “well equipped”. I'm not sure many would agree with that, but what do I know?
Will we see a global shutter image sensor for the EOS R system?
Not much here to hypothesize about, but he did comment that Canon already has a global shutter in the EOS C700GS. However, he does talk about redundancy with this feature and whether or not a global shutter would benefit most photographers. Does this mean Canon only sees this tech in the Cinema EOS lineup?
He also noted that global shutter sensors are difficult to manufactue.
You can read the entire interview at PhotoWebExpo.
I'll let other's speculate on what the R1 will offer. Perhaps it's a global sensor and QPAF that aren't quite ready yet.
The good thing about it not being the flagship camera is that perhaps the R3 might undercut the Sony A1 in price (maybe $5995? again, probably wishful thinking).
Canon never opened up the EF mount. Opening the RF mount to third parties would require Canon to invest in supporting third party manufacturers, and that would likely be a logistical hassle.
I think the decision for third parties is if they want to go all-in on the RF technologies like the control ring.
(what other categories of photography are there that do not fit this designation??) LOL
As I said. :-)
I wonder if the R3 will remain dual-pixel (as stated by Canon marketing material) to give the R1 something of its own.
(I was surprised to see that the first RED Cameras had PL and Nikon mounts)
In that regard, I do not think Canon ever took the M cameras seriously.
I wonder if this camera is motivated, to some extent by AP's moving to Sony a while back. Maybe to run well in that market, they need something that doesn't cost like a "1" series but is more suited to PJ?
While I believe this is true in this case, they always say this tho, Just the usual marketing talk.
"What’s the future of the EOS M system?
Canon couldn’t comment on the future of the system, but in this interview, the EOS M system was called “well equipped”. I’m not sure many would agree with that, but what do I know?"About what I expected from Canon. In my vision, the M will go on for a few more years with pretty boring minor body updates, maybe an extra prime or new version of a slow kit lens. Then will slowly fade away with fewer and fewer updates but probably will never be officially discontinued.
Landscapes, portraits, macro, architecture etc...