Apple's dealings with developers like Roblox are at the core of the Department of Justice's antitrust probe, with what was discovered in the App Store lawsuit with Epic Games resurfacing.

Roblox (RBLX) stock popped after the company lent its support to Apple (AAPL) in the ongoing dispute between the tech giant and Epic Games over App Store policies The stock has been under pressure ...

John Stauffer was the head of the Apple division behind CarPlay and Group FaceTime — and now he's leaving the company for Roblox.