With the release of WordPress 3.0 Beta 2, I have updated this plugin with latest features added to custom post types. Both lite and pro versions got those core changes. But, as usual, Pro version has another new and interesting feature to offer over lite version.
You can now add description for custom post types and use advanced options to set custom rewrite slug. Also, plugin is now flushing all WordPress rewrite rules when you add or edit custom post types to avoid 404 pages for new post types.
Pro version has another useful tool. If active (plugin Settings panel), this will add Clear ALL button for all non hierarchical taxonomies meta boxes on post edit pages. By default, this will work for post tags and all custom taxonomies that are not hierarchical.
And, if you want to test Pro version before buying, you can sign up for free test drive blog on xScape demo website and see what you will get with Pro upgrade: http://xscape.info/.