In reality they have released three top shelf lenses in 12 months with 1 more coming 12mm F1.2 it doesn't look like they are abandoning the mount any time soon.
Nah. O
nce the transition to something new begins, m4/3 will recede as briskly into the past as 4/3, OM, and half-frame SLRs did before it.
Recent events question your lens argument. Look to Nikon, which released its very best F-mount lenses to date--the $2000 28mm f/1.4E and $2400 105mm f/1.4E primes--within a year or so of last week's Z-mount introduction. Go only one more year back and you find the latest revisions of staple pro lenses like the $2400 70-200 f/2.8E FL and the $2000 24-70 f/2.8E. Hell, they released a new 500mm phase-freznel F-mount tele on the day
of the Z-mount introduction.
A cursory search back into the Nikon forums of a few months ago will reveal 25 people writing
exactly what you wrote above--"in reality Nikon released a $15,000 suite of stunning professional f-mount lenses in the last 18 months; of course they won't be abandoning the F-mount any time soon!"
Cue the sad trombones on that one.
Perhaps you could wage a semantic argument about what "abandonment" means? Yah, Nikon will still make F-mount cameras for a while. I mean,
technically, Nikon hasn't even abandoned film SLRs yet; you can still buy a brand-new F6. But how many people do?
When engineering and marketing interests shift, customers often follow en masse. It's gonna happen quickly in Nikonworld, the shift from F to Z, even with those beautiful new F-mount lens designs on the market for those of us who remain a little while.
Why would it play out any differently in Olympusworld? It certainly didn't during the 4/3 to m4/3 re-invention. Some people were loud and huffy about "abandonment," they'd just invested in incredible f/2 SHG zooms; but in the end the transition happened quickly.
Things progress and move on, now faster than ever before. And Olympus, particularly, has a history of "moving on" more often than most. It's what they do. And you will too. A year from now you'll be the forum's loudest and most staunch defender of the newest Olympus larger-format system. Come on, man. We all know you'll be the first out of the gate with the bullet-point list of why it's better than anything from Canon to Hasselblad, whatever it is. You'll roll with it.
To which I say, have fun and good on ya.