Apple has released the fourth developer betas for iOS 26.5, iPadOS 26., 5, watchOS 26, 5, and 9.5 respectively, as testing continues. The first round was distributed on March 30 and re-released on March 24. The new builds have introduced notification forwarding in the EU and continued testing end-to-hend encrypted RCS messaging. AppleInsider and Apple strongly advise users to avoid installing beta operating systems onto any "highly-sensitive" or primary-use hardware due to potential data loss and other issues.