You can use the new release to make direct calls from your apps to Amazon S3 for storing and retrieving objects. You can also use Amazon SQS to read from and write to message queues, Amazon DynamoDB to store and retrieve data, and Amazon SNS for working with mobile devices and other distributed services.
The blog post about the release says the SDK supports access to all of the functionality provided by each of the services listed above, and suggest that:
“you can create and populate S3 buckets, manage message queues, create, populate, and query DynamoDB tables, and much more.”
Using the SDK looks pretty simple, essentially you only need a single script tag to start using the SDK. However, if you want to use the S3 APIs you will need to enable CORS (Cross-Origin Resource Sharing) on the target buckets. This is down from the AWS Management Console, and once enabled you can call the services that now support CORS - Amazon DynamoDB, Amazon SQS, and Amazon SNS.