iOS 16 Developer Beta 4 brings message editing and mail unsend into focus

Apple’s vision of user-controlled messaging is coming into focus.

On Wednesday, the iPhone maker finally dropped the long-awaited iOS 16 Developer Beta 4, which includes updates to Messages and Mail that offer a better understanding of how its new communications controls will and won’t work. The newest release arrives a few weeks after Apple’s first iOS 16 public beta.

On the Message front, retrieval and editing of sent messages are looking a lot more like they did when Apple announced the feature — and iOS 16 as a whole — at its WWDC developers’ conference in June. But the company is also adding some …