According to biz.chosun, Robby Walker, a senior AI executive at Apple, is expected to leave his position by the end of October 2025. Walker was a key figure behind Apple's voice assistant Siri. Earlier this year, due to delays in upgrading Siri with AI capabilities, his leadership role was transferred to the software head. Since then, he has been involved in developing a new AI-based web search system, which is expected to launch in 2026.