The Apache Commons Project has released CLI 1.1, a "simple API for working with command line arguments and options." This is mostly a bug fix release with some API changes.
The Apache Jakarta Project has released POI 3.0.1, an open source Java library for "manipulating various file formats based upon Microsoft's OLE 2 Compound Document format. OLE 2 Compound Document Format based files include most Microsoft Office files such as XLS and DOC." Version 3.0.1 fixes bugs.