It's a day of upheaval in the boardroom at Apple -- in the good sense. Remember how Bob Mansfield said he would retire in June? He's had a change of heart and will keep working on future products. Meanwhile, two of the vice presidents who've been mainstays of Apple's recent plans -- Mac Software Engineering VP Craig Federighi and Hardware Engineering VP Dan Riccio -- have been promoted to Senior VP. All three will report directly to Tim Cook. DevelopingFiled under: