Solr 3.6.1 was released on July 22, 2012
22 July 2012, Apache Solr™ 3.6.1 available The Lucene PMC is pleased to announce the release of Apache Solr 3.6.1. Solr is the popular, blazing fast open source enterprise search platform from the Apache Lucene project. Its major features include powerful full-text search, hit highlighting, faceted search, dynamic clustering, database integration, rich document (e.g., Word, PDF) handling, and geospatial search. Solr is highly scalable, providing distributed search and index replication, and it powers the search and navigation features of many of the world's largest internet sites. This release is a bug fix release for version 3.6.0. It contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at: http://lucene.apache.org/solr/mirrors-solr-3x-redir.html (see note below). See the CHANGES.txt file included with the release for a full list of details. Solr 3.6.1 Release Highlights: * The concurrency of MMapDirectory was improved, which caused a performance regression in comparison to Solr 3.5.0. This affected users with 64bit platforms (Linux, Solaris, Windows) or those explicitely using MMapDirectoryFactory. * ReplicationHandler "maxNumberOfBackups" was fixed to work if backups are triggered on commit. * Charset problems were fixed with HttpSolrServer, caused by an upgrade to a new Commons HttpClient version in 3.6.0. * Grouping was fixed to return correct count when not all shards are queried in the second pass. Solr no longer throws Exception when using result grouping with main=true and using wt=javabin. * Config file replication was made less error prone. * Data Import Handler threading fixes. * Various minor bugs were fixed. Note: The Apache Software Foundation uses an extensive mirroring network for distributing releases. It is possible that the mirror you are using may not have replicated the release yet. If that is the case, please try another mirror. This also goes for Maven access. Happy searching, Lucene/Solr developers
This page may be updated if there are any errata for the release documentation that users should be aware of.