Version 1.6.4 of Groovy has been released. Groovy is
a JVM hosted scripting language that "builds upon the strengths of Java but has additional power features inspired by languages like Python, Ruby and Smalltalk."
1.6.4 is a bug fix release.
There's also a beta of Groovy 1.7.
1.7 adds various new features including annotations available
on imports, packages and
variable declarations; and nested and anonymous inner classes. I guess closures weren't enough after all.