The latest stable release is 1.6.2
Release Notes for JIGS version 1.6
Support for modern Objective-C runtimes. General portability improvements. Improvements to the building process including parallel building.
Release Notes for JIGS version 1.5
New advanced support for exposing enumeration: the wrapper tool can now recognize and parse enumeration declarations in the Objective-C header files, so it automatically maps them to ints, and upon request can expose any enumeration you want using static Java constants in a class.
Release Notes for JIGS version 1.4
In this release, the makefiles for wrapping an objective-c library have been rewritten to decouple the process of wrapping from the process of building the original library.