Overall, I'm happy to have official support from AWS. Are there any plans to support credentials via IAM roles? It looks like the two options right now are to set environment variables or read credentials from disk. I was just about to look into adding this capability to livelycode's aws-lib.
Open an issue for IAM roles in the GitHub issue tracker (http://github.com/aws/aws-sdk-js/issues). It seems like we want this, so opening an issue will give us all a better way to track the feature.
Do you accept pull requests? I've being maintaining my own node.js to AWS stuff for the last 18 months. I may know a thing, or two, about the AWS APIs.
The top level of npmjs.org says "Node Packaged Modules."
What I was trying to say with regard to the event loop is that you don't have to write your own.
Let me know what you think of the SDK. The team loves feedback.