See also here:
here:
http://www.sfgate.com/business/article/Microsoft-close-to-naming-Satya-Nadella-as-CEO-5190675.php
here:
http://www.reuters.com/article/2014/01/31/us-microsoft-ceo-idUSBREA0T1ZY20140131
and here:
There is also talk that The Microsoft board is also discussing replacing co-founder Bill Gates as chairman with lead independent director John Thompson.