You realise that this is all unfounded speculation, right?

What you previously said, hasn't (yet) been proven true in this case. I don't think it will happen, because I don't think WP7 makes sense for Nokia. Microsoft has a few areas where it does well, and it has many more where it tries and f's up, the mobile market is not an area where MS has done particularly well (anyone remember the Kin?), it would be a bad move for Nokia to adopt WP7. It might benefit MS, but not Nokia.