Apple has released the first release candidate (RC) for macOS 26.6, signaling an upcoming official update. Following several beta versions, this RC focuses primarily on bug fixes and system improvements rather than introducing significant new features.

One notable change highlighted in the release notes is an optimization of the Spotlight index, which is believed to be in preparation for iOS 27. This suggests that macOS 26.6 will likely mirror this optimization, preparing users for the next major iOS version.

Previously, a fix was implemented for incorrect Intel-only app identifications that triggered deprecation notices. Apple has also marked Health Kit and ecosystem issues as resolved. The build number for this macOS 26.6 RC is 25G70. Users can install the RC by backing up their Mac, navigating to System Settings > General > Software Update, clicking the 'i' icon next to Beta Updates, and selecting the macOS Developer Tahoe Beta from the dropdown menu.