Do the two licenses mean you have two versions of the CMS? The open-source version with a limited feature set and the commercial one with additional features?
No. We only have a single version of the CMS - the open-source version.
In fact, this is the only version that can be downloaded.
Buying a commercial license will simply get you a license, legally permitting the removal of copyright notices from the user-interface of the open-source version.