Dangerous. Is the contract with MS closed source too?

MS is just THE corporation trying to maximise its profits+chances of survival for better returns for its shareholders and they would use whatever it takes to achieve it [prevent Linux handset proliferation infecting desktop market, use Nokia for profit, dispose of Nokia as a Lumia]...

I feel - MS contract or not- the chances that Nokia will be able to continue to differentiate under MS reign by great software once the pool of nice hardware R&D concepts built up in the old times of huge budgets but steer less management are minimal.

MS on the contrary is acutally using Nokia and benefiting today to differentiate its OS with nice hardware AND software (Maps).

And old Finnish saying goes somehow like this "adapting the MS software is like shitting your pants to ease saddle pains while riding an uncontrollable horse.

Sooner or later you'll be found by the road side without transportation and pants full of sht