The next release of gwt-phonegap 0.8 is ready to be downloaed.
The Contacts API is now part of the project and two plugins Childbrowser and Badge.
The main improvement is that gwt-phonegap now runs inside your desktop browser (with an emulated implementation). By using GWT.create to create the instance of the new phonegap interface we can easily detect the environment and load the appropriate gwt-phonegap implemenation. This makes it much easier to develop your phonegap app in the browser.
The new version is now the featured download on the project page.