The bean converter now stores attributes in a "conversion" namespace only if the caller has specified a namespace for elements. This makes life a lot easier if you're passing the converter output into an XSLT stylesheet.
The bean converter also has an option to write enum values using toString(). This is useful if you've defined enums with descriptive strings.
And finally, OutputUtil now supports explicit use of the Xalan engine for serialization. While the JDK uses Xalan internally, it uses an older version that has a different mechanism for setting indent; the current Xalan distribution rejects it. The converter now looks at the type of Transformer, and picks JDK- or Xalan-appropriate behavior.
As always, you'll find this release on Maven Central once Sonatype runs a release cycle.