The new version introduces four enhancements and two fixes. Release notes are available on the ScroogeXHTML web site and in the HTML API documentation.
Starting with release 6.3.1, progress listeners are deprecated. They will be removed in a future version to improve conversion speed.
You can evaluate the new release with the online converter demo, which displays the configuration property values of the converter, and allows to modify many of them.
The demo page also links to a demo of a preview (or a development snapshot) of the next version when it becomes available.