It's official: Don Mattrick is CEO of Zynga. Here's his quote about the move from Zynga's press release on the hire.

"In its short history, Zynga has redefined entertainment and brought social gaming to the mainstream. More than 1 billion people across web and mobile have installed Zynga games, and franchises like FarmVille and Words With Friends have become a part of people's daily lives," said Mattrick. "I joined Zynga because I believe that Mark's pioneering vision and mission to connect the world through games is just getting started. Zynga is a great business that has yet to realize its full potential. I'm proud to partner with Mark to deliver high-quality, fun, social games wherever people want to play."

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Microsoft's Don Mattrick.

Here's one few saw coming. Don Mattrick, the current head of Microsoft's Interactive Entertainment division, may be on his way to another games publisher. That publisher? Troubled social games giant Zynga.

The report, which comes from sources exclusive to All Things D, states that Mattrick is close to accepting a top level position at the company, possibly a CEO role. Zynga founder Mark Pincus is the company's current CEO, though Pincus has had his hands full with layoffs and various controversies since the company went public.

Rumors of shakeups in Microsoft's games division have been kicking around for a while, though most assumed Mattrick would be absorbed into other levels of Microsoft, or possibly take the currently vacant CEO position at EA. Zynga wasn't really on anyone's radar, but it makes a degree of sense, since it would reunite Mattrick with his close friend Bing Gordon, who currently sits on the company's board.

We'll update this story if/when official confirmation arrives.