Apple released iOS 13.4 to public beta testers on March 18. The update comes the same day we learned that iOS 13.4 would be made available March 24. The sixth beta is iOS 13.4's GM (golden master), even though Apple refers to it as "beta 6."

Apple released iOS 13.4 to public testers at 1 p.m. PDT, its usual release time for public beta software updates. Registered developers received the update at 10 a.m. PDT, so we knew about the update for about three hours beforehand.

Public testers updating to iOS 13.4 will experience at least 33 new features and changes. Some of the highlights include: