Yes, users have reported improvements in external display connectivity with macOS 11.5.2. The update has decreased the occurrence of external displays failing to wake up after sleep. Users have noticed more stable behavior, with windows moving predictably between monitors and staying accessible. However, there have been a few cases of Bluetooth and keyboard connectivity issues. It is recommended to apply the latest macOS updates, such as 11.5.2, for bug fixes and improvements. Users should continue monitoring the performance of their external displays and peripherals.