This is an informal overview of the enhancements to the Java programming language specified by JSR 335 and implemented in the OpenJDK Lambda Project. It refines the previous iteration posted in December 2011. A formal description of some of the language changes may be found in the Early Draft Specification for the JSR; an OpenJDK Developer Preview is also available. Additional historical design documents can be found at the OpenJDK project page. There is also a companion document, State of the Lambda, Libraries Edition, describing the library enhancements added as part of JSR 335.