By Richard Leadbetter Published 31/10/2014
Chip designer AMD has developed a smaller, more cost-effective 20nm version of the main processor found in Xbox One, opening the door to a cheaper 'slim' version of the Microsoft console. The news comes from the LinkedIn bio of AMD's senior manager of SOC (system on chip) physical design, as discovered by Mosen from the Beyond3D forums. The entry in question says he "successfully planned and executed the first APU for Microsoft's Xbox One Game Console in 28nm technology and a cost-reduced derivative in 20nm technology."
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http://www.eurogamer.net/articles/digitalfoundry-2014-smaller-cheaper-cooler-xbox-one-processor-in-development