Apple is continuing to refine iOS 27 ahead of its planned September launch, and the third beta includes several new features. Siri is more customizable, there's a fun new wallpaper action, and some useful improvements to Photos and Shortcuts. Subscribe to the MacRumors YouTube channel for more videos. Siri Voice Beta 3 adds support for Siri voice customization on compatible devices. The customization option existed in prior betas, but it was not active.