I do wonder what the point of desktop OSs are though. It seems in the fight between various desktop OSs, the desktop OS itself is losing, and the browser is winning.
This is about someone who's been a key behind-the-scenes manager at Canonical for many years getting a promotion.
And there's also the Ubuntu Foundation, created specifically for the reason of continuing to push Ubuntu distro after Shuttleworth steps away. So from that point, I don't think Ubuntu is in jeopardy.
Another point is whether Ubuntu would become a (greater) channel for distributing/marketing Canonical's money-making products to the wide public (e.g. Ubuntu One), and whether Canonical would push so hard as to _negatively_ impact Ubuntu itself.
Which is surprising given that SuSE used to be big...and I thought it still was, sort of.
This will also leave Mark with more free time to focus on what he seems to be passionate about. All in all this could turn out to be exactly what Canonical and Ubuntu needs.