I read this as: if there is interest in the community, the community will do it.
But this say's nothing about support from Nokia.

I have had my phones for an average of 3 years each.
This will be my most expensive phone yet.
I am hoping it will be able to fulfill all my requirements (many I know it already will) of a mobile-phone/computer.

I will not be looking to upgrade the OS if it works as expected.
For the next 3 years I am only hoping it will be stable, and any new application coming out in this time, I expect it to work on this device.

If all is not as I expected - I will be miserable, unhappy and discouraging other consumers to use it.
Just because it has a console, doesn't put a smile on my face the 100'th time around.

In this context for Nokia the OS (on any device) should be such that it will allow me to use as many applications ("out of the box") as possible. And for developers it should be such as to make it as easy as possible to make applicaions for the most possible devices.

With a unified, stable OS it is all possible.