Since I have no clue about these figures, I'll just copy them verbatim so I won't make any mistakes.
Windows 7 played a major, major role in the revenue jump. "Exceptional demand for Windows 7 led to the positive top-line growth for the company," says Peter Klein, chief financial officer at Microsoft, "Our continuing commitment to managing costs allowed us to drive earnings performance ahead of the revenue growth."
Windows 7 has seen tremendous sales, with more than 60 million Windows 7 licenses leaving Redmond during the second quarter, making it the fastest selling operating system in history according to Microsoft. "This is a record quarter for Windows units," says Kevin Turner, chief operating officer at Microsoft, "We are thrilled by the consumer reception to Windows 7 and by business enthusiasm to adopt Windows 7."