Apple today released beta 5 of iOS 11.4.1 and macOS 10.13.6 to developers. This update is most likely to include bug fixes and security updates. As iOS 12 is also in testing, meaning that any new features will go straight over there instead of being in iOS 11.
Their is currently nothing new in all of these betas but it does include bug fixes and performance improvements. If your looking for new features coming soon to these devices, Apple last week announced macOS Mojave, iOS 12, and tvOS 12 Public Beta. You can enroll in the beta program at beta.apple.com
If there are any notable changes or fixes in these updates, we will keep you updated!