Apple recently transitioned its Password Monitoring Service from Java to Swift, resulting in a notable 40% increase in performance. This shift not only enhances the service’s scalability and security but also its overall availability. However, there's ongoing debate about whether these improvements are primarily due to Swift's capabilities or simply a result of modernizing legacy code and fixing existing issues. Developers also express hope for further advancements at the upcoming WWDC regarding Swift's integration with various editors outside of Xcode. Discussion on automatic reference counting (ARC) raises questions about how these changes affect garbage collection, suggesting there might be specific advantages depending on the workload.