I am pretty sure that Nokia knows exactly if they will incorporate Flash 10.1 in a future update of the N900.
But they do not communicate. And this is so bad.
Meego is mentioned by Adobe but nothing about Maemo.

I am pretty sure now that it means that indeed this is not coming. And as the community is quite sensitive these days to some issues regarding Meego, I believe this is just politics, I mean that they are just waiting for the right moment to announce that this is not coming.
Or maybe it will not even be announced but will be de facto a reality.

And now I do believe this is nothing related to Adobe. The press release is clearly trying to say: everybody is dancing with us apart from Apple. So Flash is great and we bring it to everybody.

And then Qim wonder why we feel abandoned
This is nothing related to open-source or not. This is related to the fact that Maemo is gradually abandoned while the focus is on Meego.

Personally I was enthusiastic about the N900 and I am still. And I do not know why I had so much hopes with Nokia !!