NHibernate 3.2 was released some weeks ago. Get the source code from the SVN repository here: https://nhibernate.svn.sourceforge.net/svnroot/nhibernate.
Binaries here: http://sourceforge.net/projects/nhibernate/files/.
JIRA issue tracking: https://nhibernate.jira.com.
As always, you can get help from the NHibernate Users mailing list: http://groups.google.com/group/nhusers.
Lots of bug fixes and some new features. My favorite ones are:
The binary distribution of NHContrib was not yet updated, but you can get the latest trunk from here: https://nhcontrib.svn.sourceforge.net/svnroot/nhcontrib/trunk/.