Apple’s iOS 27 beta 4 is here with fewer big changes, a smarter Siri, and a foldable clue in the code

Apple has released the iOS 27 beta 4 to developers on Monday, two weeks after beta 3. This build leans on polish over new features: the TV app gains automatic episode downloads, Camera adds ProRes Log 2 encoding, and Photos gets a zoom-to-fill toggle. The Notification Center wallpaper cutout from beta 3 is gone. Siri AI remains the headline act ahead of September’s public launch.