Windows 7 Ultimate Elop out as head of Microsoft O

Stephen Elop, the President of Microsoft;s Business unit,Windows 7 Ultimate, is leaving Microsoft to turn into the CEO of Nokia.Nokia;s CEO Olli-Pekka Kallasvuo will step down Sept. 20. Elop will get the Nokia CEO reins on September 21.Elop ran the Details Worker,Microsoft Office Professional Plus 2010, Microsoft Business Solutions/Dynamics and Unified Communications Groups Enterprise. He joined Microsoft in January 2008 from Juniper Networks where he was Chief Working Officer.He was 1 of the 4 presidents at Microsoft along with a member with the senior leadership staff. Elop;s Office-chief predecessor was Microsoft veteran Jeff Raikes, who left Microsoft in 2008 and is now the CEO with the Bill & Melinda Gates Foundation.My ZDNet colleague Larry Dignan is wondering whether a Microsoft man can fix Nokia. I;m wondering who Microsoft will appoint to replace Elop. No word on whether it will be an insider or an outsider.Elop;s teams have been functioning with Nokia for more than a year on getting various Microsoft products,Office 2010 Key, like Office Mobile and Communicator to work on Nokia smartphones.As of Elop;s departure, CEO Steve Ballmer will now have two huge parts with the company reporting directly to him. Using the departure of former Entertainment & Devices Chief Robbie Bach, announced earlier this summer,Windows 7, Ballmer will have the mobile communications company,Office 2007 Serial, gaming and now Workplace all reporting to him until new presidents are named.Update: Here;s Ballmer;s letter to the Microsoft troops about Elop;s departure.