Apple has released the fourth beta of macOS Tahoe 26.5 to developers for testing, arriving a week after the third beta. Developers can access the update through System Settings, selecting General, then Software Update, with beta updates enabled and a free developer account required for installation.

No new features were discovered in the initial three betas, suggesting this update primarily focuses on bug fixes and stability improvements. The release follows Apple's standard beta testing protocol for macOS updates, giving developers time to identify and report issues before a public release to the wider user base.

This maintenance update appears designed to address performance concerns and resolve lingering issues rather than introduce significant functionality. The consistent release schedule indicates Apple is working methodically to ensure stability before making the update available to all macOS users who have adopted the Tahoe version.