After nine years as Apple's senior director in platform architecture, Gerard Williams III, left the company in February of this year, according to a report from CNET.
During his time at Apple, Williams led the development of all Apple's processors beginning with the A7, which was fitted into the older iPhone 5S models, to the company's latest and greatest A12X chip, which is being used in the new iPad Pros. In recent years, CNET reports Williams' role evolved "beyond leading the design of the custom CPU cores for Apple's chips to overseeing the layout of the various parts of the system-on-a-chip, or SoC, inside the company's mobile devices."
Despite his recent departure, it's likely Williams still played a part in the development of the next few products Apple will unveil later this year. It was also previously revealed that Apple may have plans of using its own chips in its Mac computers starting as early as 2020 to replace the current Intel processors being used, according to a report from Bloomberg. It's possible Williams may have had a hand in that project, as well.
Before working at Apple, Williams was an employee at ARM for 12 years.
It's currently unclear why Williams left the Cupertino-based company, and he has yet to make any official announcement regarding his next projects.