One of the key persons behing AMDs CPU architectures reportedly has left AMD, he is one of the key persons behind the upcoming AMD Zen architecture, which now also might be delayed towards Q4 2016.

Keller not just responsible for the Zen CPU architecture; but also was leading the team that designed AMD’s still-upcoming ARM-based K12 CPU, pending for launch in 2017. 

“Jim’s departure is not expected to impact our public product or technology roadmaps, and we remain on track for “Zen” sampling in 2016 with first full year of revenue in 2017.” states AMD.

 Mark Papermaster, AMD's Chief Technology Officer, will step in as acting leader for Keller's team and will now help oversee one of the most important products in the company's history.

CPU Guru Jim Keller leaves AMD