He's also still head of the App Store which is the center of the majority of the antitrust firestorm, so it honestly looks more like he'll be able to focus on that for now.
Steve Troughton-Smith suggested on Twitter that he may keep that role only so that they can fire him as a sacrificial lamb when the anti-trust hammer comes down.
Tim Cook just gave a full-throated defense of the App Store under oath before Congress. There's no possibility of Tim making Phil the fall guy. Tim owns this now.