Groovy 1.8 is out and it packs a lot of new features, performance improvements, and some new bundled modules.
1.8 is packed with tons of new features and enhancements, for your productivity, and your pleasure. In particular, you'll be happy to learn about:
the new Domain-Specific Language authoring capabilities (http://bit.ly/groovy-18#Groovy1.8releasenotes-CommandchainsfornicerDomainSpecificLanguages) for more readability and expressivity of your business rules, the runtime performance improvements (http://bit.ly/groovy-18#Groovy1.8releasenotes-Performanceimprovements), the bundling of the GPars parallel and concurrency library (http://bit.ly/groovy-18#Groovy1.8releasenotes-GParsbundledwithintheGroovydistribution), the built-in JSON support (http://bit.ly/groovy-18#Groovy1.8releasenotes-NativeJSONsupport), the new compile-time meta-programming features (http://bit.ly/groovy-18#Groovy1.8releasenotes-NewASTTransformations) (several new useful AST transformations), the new functional programming aspects of closures (http://bit.ly/groovy-18#Groovy1.8releasenotes-Closureenhancements), and much more.
Full release notes: