Gradle 2.0 came out last week, and it's a pretty big move from Gradle--the first major version update they've done. With the major release comes a baseline of backwards compatibility, and a significantly simplified codebase. They were able to simplify services by removing expired and redundant features and API. There's more details on the exact things that were removed and added in the official release notes. It's worth pointing out that the "Potential Breaking Changes" section is probably of particular use to a lot of readers.