Apple is planning to do a codebase cleanup of its in-house operating system (OS) for the iOS 27 update, which will offer longer battery life and improved efficiency, according to Bloomberg’s Mark Gurman. Additionally, the Cupertino-based tech giant is planning to bring some user interface (UI) changes with the firmware update. However, they might not be as significant as the Liquid Glass design on iOS 26. The company is reportedly also planning to introduce the revamped AI-powered Siri with iOS 27.