The release of Lucene 2.1.0 has been announced recently. The new release includes bugfixes, performance improvements, new features and removed some deprecated things. You can find the whole list of changes in the CHANGES.txt file. Some new features of interest are:
- A new “Match All Documents” query option in QueryParser
- New methods fro handling updates in IndexWriter
- Support for leading wildcards in QueryParser
You can find the new release at lucene.apache.org/java.