The Horizon OS interface (formerly Quest System Software) and design language has remained largely the same ever since Meta Quest Pro launched in 2022. Even that evolution was a gradual one from the Oculus Go interface, which debuted in 2018.
The new redesign at Connect showcases a completely revamped UI and a simpler interface. The system menu (now called the “navigator”) adds an overlay of faded white to the view when you open it. Horizon Worlds are the most prominently displayed destinations, while the Library tab appears to only show the most recent six apps, unless it is expanded.