Guice 3.0 is now available on central. You’ll need the following to depend on it.
<dependency>
<groupId>com.google.inject</groupId>
<artifactId>guice</artifactId>
<version>3.0</version>
</dependency>
Sadly, they haven’t uploaded source jars, and the class files have been compiled with Java 6. This may be a show-stopper for you…