I'm sure Nikon and others will still have to provide some support for current units under warranty.
To a larger extent, especially in the corporate field, switching to digital is a must to be cost competitive -as I'm sure there are a few whom refuse to switch, it's rather obvious that it's more a personal decision than one of budget. I jumped on that wagon with the 1Ds mark I years ago, and still shoot with that today. I've easily recovered the $7K price tag in savings over film many times over.
I still shoot film personally simply for the look of it. However, I had to drive around for a few hours to find what appears to be the last three-rolls of reala in town. I had an interesting conversation with the managers of the Ritz outlet, and they tell me that on a good day they would put a whopping six rolls of film through their machine. The majority of their business is digital prints from customers memory cards.
Visiting two wall-marts I found several folks standing in line waiting for their turn to use several kodak kiosks, ordering and burning their own picture disks. Most of them did not look like computer or photo savvy folks. They could care less about the dynamic range or film grain vs. digital noise arguments that often fill these forums. The whole digital process has now become a quick and easy push button affair. That friends, is the real market driver of digital.
After five years of shoot digital, in the final analysis, none of that argument matter to me as well. My work still met deadlines, none of the marketing managers or directors complained range, skin tone, or the lack of film grain, etc. etc. Work was done and projects were wrapped up just the same.
As Bernard said "If that is confirmed, it is indeed a final nail in the coffin."
I would add that no one was around to hear that last one hamming in.