Apache Solr version 1.4 is out now.

Solr is a search server based on the Apache Lucene search library. It features faceted search, caching, replication and hit highlighting.

This is a bug fix release, addressing issues with CapitalizationFilter and StreamingUpdateSolrServer. It also adds Javadocs in BufferedTokenStream and upgrades to Apache Lucene 2.9.3 to obtain several bug fixes from the previous 2.9.1 release.