"We've brought on board someone many of you know – Soren Johnson (designer of Civilization IV) who has come to Stardock, at least for awhile, to oversee the design of all our games," Stardock CEO Brad Wardell said on his company's official forums. "I think his impact on our upcoming (think 2014/2015/2016) will be pretty obvious."
Up until now, Johnson (not pictured above) had maintained his post at Zynga as design director, after joining the company in September of 2011. Prior to that, Johnson spent over four years as a lead designer and programmer at Electronic Arts, working on such games as Spore. We've reached out to Stardock for more information about Johnson's role in the company, and what the temporary qualifier in the announcement may signify, if anything.
Update: A Stardock representative has clarified to Joystiq that Soren Johnson is only working as a consultant at the developer, and is not on staff. Joystiq has contacted Johnson for clarification on his position at Zynga.