Lucene 4.0
Lucene 4.0 has not yet been released.
Please see (Obsolete) HowToContribute for more information on working with the trunk source code that will eventually be branched to create the Lucene 4.0 release.
Once Lucene 4.0 has been released, this page may be updated if there are any errata for the release documentation that users should be aware of.