Apple is reportedly planning a modest redesign for macOS 27 that refines the Liquid Glass interface introduced in Tahoe, improving transparency, shadows, readability, and overall polish after what Apple internally viewed as an unfinished first implementation. The update will also focus on performance and efficiency improvements, while bringing major AI upgrades such as a Gemini-powered Siri with chatbot features, unified Siri and Spotlight search, and other Apple Intelligence enhancements ahead of its unveiling at WWDC 2026 on June 8.