Apple today previewed macOS Big Sur, the latest version of the Mac operating system. It introduces a redesign that, per Craig Federighi, Apple’s senior vice president of Software Engineering, is entirely new yet instantly familiar. 

Safari is packed with new features, including a customizable start page, redesigned and more powerful tabs, translation features, and a new Privacy Report. 

The updated Messages app lets Mac users send and receive more personal and expressive messages, and keep track of and interact within group messages. Maps also offers an all-new experience with immersive features for exploring and navigating the world.

Federighi says everything from the curvature of window corners to the palette of colors and materials has been refined, and new features provide even more information and power. Icons in the Dock have been designed to be more consistent with icons across the Apple ecosystem while retaining their Mac personality. Buttons and controls appear when needed, and recede when they’re not. The entire experience feels more focused, fresh, and familiar, reducing visual complexity and bringing users’ content front and center.

The customizable menu bar features an all-new Control Center, delivering quick access to controls from the desktop. An updated Notification Center includes more interactive notifications and redesigned widgets that come in different sizes, providing users with more relevant information at a glance. And a new design for core apps brings more organization to multiple open windows and makes interacting with apps even easier, Federighi says.

In the biggest update to Safari since its original launch in 2003, the browser is even faster, providing industry-leading speed and battery life, he adds. Safari’s fast JavaScript engine purportedly helps it outperform other browsers on Mac and PC, and Safari loads frequently visited sites an average of 50% faster than Chrome. Tabs have been entirely redesigned to make navigating with Safari faster and more powerful by showing more tabs onscreen, displaying favicons by default to easily identify open tabs, and giving users a quick preview of a page by simply hovering over the tab.

Safari brings new features for greater personalization while browsing the web. Users can customize the new start page with a background image and sections like their Reading List and iCloud Tabs. With built-in translation, Safari can detect and translate entire webpages from seven languages with just a click. 

Users can further personalize their experience with improved support for extensions. Federighi says the Mac App Store makes it easy to discover and download great Safari extensions with a new category that includes editorial spotlights and top charts.

Privacy has always been built into Safari, and a new Privacy Report delivers added visibility into how Safari protects browsing activity across the web. Users can choose when and which websites a Safari extension can work with, and tools like data breach password monitoring never reveal your password information — not even to Apple.

Messages on the Mac includes new tools to better manage important conversations and share expressive messages. Users can now pin their favorite conversations to the top of their messages list for fast access, and search has been entirely redesigned — organizing results into links, photos, and matching terms — to help users quickly find what they are looking for.

Message effects let users add personality to their messages with balloons, confetti, and more. Users can now create and customize their Memoji on the Mac, and express themselves with Memoji stickers to match their mood and personality. And with a new photo picker and #images, it’s easy to quickly share images, GIFs, and videos.

New group messaging features streamline interactions with family, friends, and colleagues. Inline replies enable users to respond directly to a message, and now they can direct a message to an individual in a group conversation by simply typing their name. And users can now set a photo or an emoji for their group conversation that’s shared with all members of the group.

Completely redesigned for macOS Big Sur, Maps brings new features for exploring the world. Discover places to visit and things to do with Guides from trusted resources, or create custom guides of favorite restaurants, parks, and vacation spots that can be shared with friends and family. Get a 360-degree view of a destination with Look Around, and browse detailed indoor maps of major airports and shopping centers. Cycling and electric vehicle trips can now be routed on a Mac, and sent directly to iPhone to have when on the go.

Privacy is at the core of the Mac experience, and macOS Big Sur offers users even more transparency and control over their data. Inspired by the convenience and readability of food nutrition labels, new privacy information detailed in the Mac App Store will help users understand the privacy practices of apps before downloading them, including the types of data the apps might collect — such as usage, contact information, or location — and whether that data is shared with third parties for tracking.

Federighi says Apple’s developer community of more than 20 million use the Mac to create amazing experiences for iOS, iPadOS, macOS, watchOS, and tvOS. Xcode 12 makes developing great apps for macOS easier than ever, he adds. 

SwiftUI gets a major upgrade so that developers can write entire apps with shared code across all Apple platforms, while adding custom Mac features like Preferences windows. And SwiftUI is used in even more places, powering the new widgets for Mac, iPhone, and iPad using shared Swift code.

Mac Catalyst, which debuted with macOS Catalina last year, has made it easy for developers to bring their iPad apps to the Mac, Federighi says. And in macOS Big Sur, Mac Catalyst apps automatically inherit the new look, while giving developers powerful new APIs and total control over the look and behavior of their apps.

Developers can now also offer Family Sharing for their in-app purchases and subscriptions, and with support for the WebExtensions API, developers can easily bring extensions built for other browsers over to Safari.

The developer beta of macOS Big Sur is available to Apple Developer Program members at developer.apple.com starting today, and a public beta will be available to Mac users next month at beta.apple.com. macOS Big Sur will be available this fall as a free software update. For more information, including compatible Mac models, visit apple.com/macos/big-sur-preview.