"While it's been one of the most challenging and rewarding periods of my life, I've reached a point creatively where I'm looking forward to working on something new," Wilson wrote in his farewell letter. "The powers that be at Blizzard have been gracious enough to give me that opportunity."
Wilson stressed that the ongoing development of Diablo III will "carry forward as normal" and that he'll remain available to the team for consultation and advice.
He discusses the creation, launch, and development of the action RPG, ending with a sentimental wave to fans: "You are the most passionate, dedicated group of gamers a designer could hope to have. I wish you all the best, and want to thank you for making this an amazing experience for me."