jMonkey Engine is available for download below.
After downloading JME, head over to the rest of jME Wiki to discover, to your amazement, the latest Getting Started guides
This snapshot build (JAR distribution) is the latest installment of the jMonkey Engine, released as stable in September 2009. It contains a host of API changes and bug fixes and is widely used.
Or you can checkout the latest source files from SVN – If you want the bleeding edge of jME, this is it.