All cloud storage providers supported now allow the configuration of an index file that is delivered for a request to the root of path of content distribution. Previously this was supported only for CloudFront but is now available for Google Cloud Storage and Akamai distributions with Rackspace Cloudfiles as well in the latest snapshot build.
AWS S3 is continuing to introduce new features steadily. New bucket locations have been added in South America (São Paulo) and Asia Pacific (Sydney) regions which are supported in the latest snapshot builds for Mac and Windows. Also, Multi-Object Delete is supported for improved performance when deleting files in a bucket.
The latest snapshot builds for Mac support new features introduced in OS X 10.8. This includes Gatekeeper support (The application is now signed with a Mac Developer ID certificate issued by Apple), support for the notification center instead of relying on Growl and most importantly HiDPI resolution artwork for Retina displays.