Hm, if this new camera is indeed part of the M system (and not for example a fixed-lens compact like the nice former Leica CM) maybe it could be made this way:
There is currently a gap in the line because the M7 is not produced anymore.
If Leica would take the existing electronic shutter of the digital M bodies they could save costs. And make a kind of new "M7" again. Maybe some additional cost reductions at some other places, too (top plate).
So in the end an aperture priority mode (and manual mode, too, of course) camera like the M7, but 500-800€ cheaper than the MP. Not cheap, but cheaper than the current MP and M-A.
Could at least be realistic 😉.
What I know for sure is at least that the demand for new film M Leicas is increasing steadily for years. Leica told that at all the last Photokina fairs since 2014 (since the introduction of the M-A). Also on their special film event in Wetzlar in fall 2019. And recently in interviews they have told that meanwhile the demand surpasses their current production capacity by a significant margin.
Cheers, Jan