I know that Elop did take Vanjokis place as Head of Mobile Solutions so he leads the smartphones as a whole that includes MeeGo and Symbian before the spot is taken

Jerri DeVard is one of the big recruits and she leads Nokia's marketing now and then there's Skillman of course but as far as i know he is still the lead of MeeGo's user experience.
Ahtisaari is above Skillman as Senior Vice President and leads design and user experience.

I haven't heard any announcement about somebody taking Jaaksis spot directly.