Thanks a lot for getting back to me Beppe. I also posted a request in the Octane Render group on Facebook and Kevin Yu and Arturo Blas Jiménez already pointed me into the right direction.
Going forward, I was wondering, whether there'd be a way to find out about these updates more officially, because the last information I got in regards to the render slave includes with Octane Render Enterprise All-Access was from the forum (I think even Jules himself), who told me to use the Studio version on the interim, until the actual system is in place. Maybe you could send out emails to the respective customers to inform them about the upcoming changes. That'd be great.
Also, this version is called "Creator Version" in the installation folder, but the license is called "Enterprise All-Access". I know how long it took me to wrap my head around the various subscription models, so if there is a new system (and a new naming convention) in place, it would be great to hear about it, before I get confused again