Only a week after the fourth betas appeared, Apple has released a fifth set of betas of iOS 11.3 and tvOS 11.3 to registered developers. The more rapid release schedule suggests that Apple is likely getting very close to a release date for iOS 11.3, which is expected to be available by the end of this month, and will add several useful new features, along with the battery health feature. As would be expected this late in the cycle, the latest betas…