Apple’s iOS 27, set for a June 8 debut at WWDC 2026, will introduce major UI changes beyond Siri. Rumors highlight a Liquid Glass slider allowing users to adjust transparency effects across interfaces—a feature Apple previously attempted in 2025 but delayed. This update, alongside broader interface tweaks, aims to refine user customization options.

The Calendar app is undergoing a significant redesign, initially planned for 2024 but postponed. Mark Gurman of Bloomberg notes it will now launch alongside iOS 27 and macOS 27, joining overhauls to Safari and Photos. These updates reflect Apple’s strategy to modernize core apps across platforms.

For the iPhone Fold, iOS 27 will introduce multitasking features tailored to its form factor, including iPad-like layouts and side-by-side app support. While full details will emerge at Apple’s fall event, these changes aim to position the Fold as a productivity-focused device. Analysts suggest this aligns with growing demand for versatile smartphones.

iOS 27’s delayed Calendar app and foldable-specific features underscore Apple’s focus on iterative improvements. By integrating customization tools and foldable optimizations, the update could strengthen its position against Android rivals in both functionality and design.