The last release from the original author was 2.0b4 (2.0 beta 4) in 2009.
However, there is a community fork "beanshell2"[1], which was created exactly because the original was left to rot. It looks like the most recent change to beanshell2 was February 2014, so it may be going the same direction.
Last time I checked it, in 2010, it didn't had any commits.