iOS 26 beta 4 just arrived, and it is likely the last developer beta that Apple will launch ahead of the expected public beta debut this month. That hasn't stopped Apple from making some fairly significant tweaks to the OS though. Liquid Glass, iOS 26's big new design language, has become more "liquid" again, after beta 3 tuned down the effect.

Apple has dropped the iOS 26 developer beta 4 and it brings back the "glass" in Liquid Glass along with other major changes.

Following the release of iOS 18.6 beta 3, Apple is now making beta 4 available to developers. While this is one of the most underwhelming updates of the iOS 18 cycle — after all, most developers are focused on the iOS 26 test builds — it is still an important update coming ahead of the big fall revamp.

Looking to download the latest iOS 26 beta 4 via OTA profile update or the IPSW links? Here’s how to install Apple’s latest developer beta on your iPhone.

Notification summaries are once again working with news app headlines in the fourth iOS 26 developer beta, though it is too early to tell if it will actually work properly this time.