This is now fully compatible with Phonegap 2.4 and GWT 2.5. It contains the new APIs such as the InAppBrowser and the Globalization API.
This version fully works with mgwt.
You can get the new version from github or from maven central:
<dependency> <groupId>com.googlecode.gwtphonegap</groupId> <artifactId>gwtphonegap</artifactId> <version>184.108.40.206</version> </dependency>