I don't recall...if I had, I would have definitely upgraded because I love this software! However, I notice on your web site for Fences 5: "Available for Business Purchasing Only" and that is vaguely familiar...maybe that's why I didn't upgrade then?
When you deploy the in-app notification for v6, if you want me to check I'd be happy to... Although, will I not receive a notification because I now have v.6 (Beta 2) ?