Hi. The version 0.13 of Truffle JARs has been successfully uploaded to Maven central: http://search.maven.org/#artifactdetails|com.oracle.truffle|truffle-api|0.13| jar List of new features can be found in changelog: https://github.com/graalvm/truffle/blob/6e5c428d1327da8fa0593fd81d1fa7722bdc7357/CHANGELOG.md Enjoy! -jt