Yes this is correct. All of our other tools and libraries consist of us paying up front for the version we need for our release. If they release a new version,

Yes this is correct. All of our other tools and libraries consist of us paying up front for the version we need for our release. If they release a new version, and our application needs that new version, then I am all about paying for it, but having to come back and pay every year whether we've incorporated a new version or not is very challenging for us and our clients. What if every piece of software and library we used required this? It would be an absolute nightmare.