Hi there 
We’re excited to announce the 1.4 release of the Asset Manager for Unity integration 
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You can install the package from Unity Package Manager by adding by name com.unity.asset-manager-for-unity.
New features
- Import Optimize and convert files
Users can now import optimized and converted 3D assets directly into the Editor from Asset Manager. This workflow reduces file size by cleaning meshes and merging polygons and converting the files in compatible formats with the editor. Both source files and optimized outputs will be imported when available.
- Pin Dependencies to ‘Latest’ Versions
Ensure your assets always use the most up-to-date dependency versions with a new upload setting. When enabled, the dependencies of an uploaded asset will point to the version with the Latest version label. When disabled, the uploaded asset will point to fixed versions of its dependencies.
- Disable the reimport modal
Users can now disable the reimport modal if they enable the avoid rolling back dependencies setting from the user preferences window. When enabled, the Asset Manager plugin won’t show the reimport dialog when importing an asset. This is useful if you want to import assets without being prompted for confirmation.
Bug fixes
- Skip Uploads for Unchanged Files
- Improved Audio Previews
- Prevent Script Duplication During Uploads
- Find the changelog for the entire list of bug fixes