Newsbrief: Microsoft CEO Satya Nadella announced today that Phil Spencer, head of Microsoft Studios, is stepping up to become head of Xbox. Spencer will be stepping into the shoes of Marc Whitten, who recently left Microsoft to take a job as the chief technology officer of Sonos. This means that Phil Spencer is now leading the development teams for Xbox -- including Xbox Music, Xbox Video and Xbox Live -- in addition to the Microsoft Studios team. "Combining all our software, gaming and content assets across the Xbox team under a single leader and aligning with the OSG team will help ensure we continue to do great work across the Xbox business, and bring more of the magic of Xbox to all form factors, including tablets, PCs and phones," wrote Nadella in a company-wide email that was also published on Microsoft's News Center.