There's a new AWS Integration project on sourceforge.net. Here are the goals:
The AWS Integration project provides a Java DAO layer to client applications making the Amazon Web Services (AWS) even easier to use, especially for J2EE developers.
Using the integration API, you don't have to work with the web services directly, or even through the Axis generated API, you access the Amazon data seamlessly using simple DAO and JavaBeans.
Qualified developers are invited to join the project and to contribute code. They are planning to cover ECS and AWIS.