It's been a little over a month since Windows and Windows Live president Steven Sinofsky abruptly left Microsoft due to apparent clashes with management, but now we know his next move. According to his Twitter account, Sinofsky will be teaching at the Harvard Business School this spring, something he did prior to joining the Windows team. A follow-up tweet indicated that he'll be teaching courses related to product development. It's not clear yet if this is a single-semester deal or whether Sinofsky plans to stick around Harvard, but his extensive experience at Microsoft developing Windows 8 (among other products) should make for an interesting class next semester, to say the least.