9to5Mac is brought to you by CleanMyMac by MacPaw. With the release of macOS 27 Golden Gate, use CleanMyMac first to free up space, optimize your system, and ensure your new Mac runs at 100% on day one. Learn more. macOS 27 Golden Gate is a huge upgrade over macOS 26 Tahoe, and not just because of the smarter design decisions. Just like iOS 27 for iPhone, the Mac adds a Liquid Glass appearance slider. This lets you dramatically change the look of your Mac across the system. more…