Apple on Thursday released a third release candidate version of its upcoming macOS Big Sur 11.2 update to developers and member of the public beta program. The latest RC arrives just three days after a second version was issued on Monday and six days following an initial RC build last week. Developers can download the most recent Big Sur release from Apple's Developer Center or as an over-the-air update. A public beta versions is available for download from the Apple Beta Software Program website. The macOS Big Sur update appears aimed mainly at introducing under-the-hood improvements and bug fixes. A significant change is the striking of a controversial "exclusion list" that allowed Apple apps and processes to bypass firewalls.