Microsoft employees are waking up to the surprise news of former OpenAI CEO Sam Altman joining them as a colleague. Microsoft CEO Satya Nadella says Altman is joining to lead a new advanced AI research team, but he’s not yet showing up in Microsoft’s corporate directory according to multiple sources. He’s still marked as an OpenAI guest. Once he’s fully onboarded Altman will have a CEO title inside Microsoft and could be set to hire hundreds of OpenAI employees who have threatened to resign.