It's not just Steve Ballmer's position that is up for grabs at Microsoft at the moment, there are plenty of other changes taking place as well. Two directors who were involved in the changes introduced in Windows 8 and Windows 8.1 have left the company's operating system division and moved across to the Bing teams.
The duo are Ted Dworkin, who was involved in the development of the Windows Store, and Jensen Harris who was the director of program management for the Windows User Experience.
Of the two, Harris is probably the better known, largely thanks to the fact that he introduced the new user interface of Windows 8 and then Windows 8.1.
Microsoft has reportedly confirmed the moves to GeekWire, but at the moment there is no word on the specific roles that Dworkin and Harris will be taking on, nor who might be in line to replace them on the Windows side of things.
So it looks as though Microsoft is really shaking things up at the moment, which could be indicative of an injection of fresh blood to work on Threshold.