It's a day of upheaval in the boardroom at Apple -- in the good sense. Remember how Hardware Engineering Senior VP 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 CEO Tim Cook, and both Federighi as well as Riccio will get their first turns at Apple's executive management team. While the shift isn't going to signal a dramatic change in strategy, it's notable that Riccio's role is expanding: he's moving from his earlier iPad focus to overseeing all the hardware Apple makes. We can only guess at what the ultimate goals might be for the new assignments, although we can imagine Apple jumping through hoops to keep a hardware executive as skilled as Mansfield on its side.