iOS 26 beta 4 is now available for developers, bringing several updates. Key changes include the return of the Liquid Glass effect in toolbars, a redesigned Camera app with a new splash screen and updated icon, improved call screening settings and a Dynamic color option for wallpapers. Notification summaries for News & Entertainment have been re-enabled and the Lock Screen wallpaper now darkens when notifications appear for better readability. On macOS Tahoe 26, updates include a redesigned Music app and notifications, with beta 4 now live for developers.
Source: 9to5Mac