: Small tweaks to the interface to improve legibility and responsiveness when switching between multiple large libraries. Why This Update Matters
: This build includes fixes for crashes that some users experienced when performing merges or duplicates in libraries with complex metadata.
Since this is a "b1" (beta 1) release, it is not pushed to all users automatically via the standard update channel. To try it: Open . Go to Settings/Preferences . Check the box for "Check for beta updates" . Run the update check again to pull the 2.1.5b1 build.
For power users, PowerPhotos is the go-to tool for organizing Apple Photos beyond what the native app allows. Version 2.1.5b1 is particularly useful if you have been running into "Unexpected Error" messages while trying to clean up your library or move assets between external drives. How to Get the Beta
Note: As with any beta software, it is highly recommended to back up your Photos libraries before running intensive tasks like merging or deleting duplicates.