I have been told previously that two EOS M bodies were coming in 2020 (which may be impacted by current events), one of which would be a follow-up to the highly popular Canon EOS M50.
The second body I'm told again will be a “flagship” EOS M body above the EOS M6 Mark II. It apparently won't be a flagship such as an EOS-1D X Mark III, but it will be an EOS M body of “greater durability and performance than you'd expect from an M5 follow-up”.
I'm not going to guess at the moment what any of this means, but I do expect some more information on this in the near future.
A more capable version with a built in EVF would get my money.
Fixed EVF, bigger weather sealed body with optional battery grip, dual cards, M6 mark ii internals and here's your 7D mark III
I think this is the right move. RF lenses for full frame, EF-M lenses for APS-C, EF lenses for M users if they think they might want to invest in glass first and upgrade to FF later.
even the most basic of EF/EF-s lenses with an adapter on the M5 make it pretty much an ergonomic nightmare
my hands are in no way big but putting something like the 15-85 makes the camera unholdable with the small grip and my pinky left hanging
the 60 macro is ok but if i add any flash it's again too much for the small grip
the 55-250 STM on the other hand handles beautifully
I never trusted the claims that had the M Mount dieing.