On March 25, 2026, Apple rolled out the macOS 26.4 official update to Mac computer users, with an internal build number of 25E246, marking a 14-day interval since the last official release. Due to caching issues on regional node servers, some users in certain areas may experience slight delays in detecting the upgrade, typically not exceeding half an hour. This update includes several significant adjustments: System support for Rosetta 2 translation service has entered its end-of-life countdown. When users launch applications relying on this technology, the system will display a clear prompt indicating that this transitional solution, first unveiled at the 2020 WWDC Global Developers Conference, is nearing its end of service. Support for this service will be completely discontinued after macOS 27, with macOS 28, scheduled for release in autumn 2027, retaining only partial sub-functions to maintain compatibility with a small number of unsupported legacy games. This means that the vast majority of non-native applications will no longer run on new hardware; In terms of battery health management, a charging limit mechanism borrowed from iOS has been introduced for the first time. Users can now customize the charging upper limit in system settings, locking the maximum battery level between 80% and 100% to prevent prolonged full-charge states, effectively slowing down chemical activity degradation and extending device battery life; Safari browser has reintroduced the "Compact Tab Bar" layout option, allowing users to freely switch tab display modes in system settings and restore the space-saving compact mode; Regarding system stability, the development team has fixed the window rounded-corner cursor misalignment issue present since the early Tahoe version. When users resize windows, the cursor path will now precisely align with the rounded corners, eliminating visual discrepancies that occurred during previous adjustments. Additionally, the release history of macOS 26 has been included.