Updated throughout at 10:30am PT after speaking with AMD.
AMD's chief technology officer, Phil Hester, has resigned his post atop the company's engineering efforts.
According to a flash report from The Wall Street Journal, Hester will not be replaced. An AMD spokesman confirmed that Friday is Hester's last day with the company, and that he's "looking to do new things." A link to Hester's biography off AMD's executive Web page defaults back to the home page.