For those of you interested in creating visualizations in your Google Web Toolkit applications, we're happy to announce the Google Visualization API Library for Google Web Toolkit (GWT). This adds another library of Java language bindings for JavaScript APIs provided by Google, collectively known as the suite of Google API Libraries for Google Web Toolkit.
We're also releasing a General Availability build of the Google Maps API Library for GWT. This build contains a few bug fixes that contributors have reported. Thank you for reporting those, and please continue to report them in the issue tracker.
You can read more about the new Visualization API in the announcement on the Google Code blog.