<human>:  What should I know about macOS 11 Big Sur?
<bot>: MacOS 11 Big Sur is the latest version of Apple's Mac operating system. It includes new features such as a redesigned user interface, improved performance and reliability, expanded security and privacy features, built-in support for the Apple Silicon family of processors, and an updated Messages app. It also brings the ability to use Apple's custom-designed M1 chip, allowing for faster performance and improved battery life. Additionally, Big Sur contains several new features and apps, such as Music, News, Podcasts, and others. Big Sur also supports the latest version of Safari, along with other improvements to the browser.