Nate Wells announced on Twitter recently that he is leaving Irrational Games after a 13 year span with the developer. He also tweeted that he is taking his talents over to Santa Monica based developer, Naughty Dog, as well as possibly having some involvement in their upcoming title, The Last of Us.
Nate Wells is best known as the art director for the upcoming Bioshock Infinite game. While Nate Wells was only one of three different people who have parted ways with Irrational Games, the developer has quickly found replacements.
One high profile replacement is Rod Fergusson, formerly a director of production for Epic Games, as well as Scott Sinclair, the art director for the first Bioshock.