From Motorola's announcement of the move:

Rick is a Silicon Valley veteran and a familiar face across Motorola, where he has been leading all product management and helping to define the ‘go forward’ strategy for the past two years. Rick first joined the company 7 years ago when Motorola acquired Good, and he started Motorola down the Android path while managing product and engineering teams. Between stints here, Rick joined Skype, where he oversaw design and product for more than 250 million monthly users until it was acquired by Microsoft.

Since his return, Rick’s had a key role in the company’s reinvigoration. He’s been a guiding visionary on the entire product front and a passionate advocate for our philosophy to focus everything we do on the consumer experience.