You are probably thinking about his "Grand Finale" video. It's an excellent resource. It's available on his web site.
I'm not a TQS staffer so don't know their plans, but expect that there wouldn't be any definite plans about repeating videos, although I wouldn't be surprised if some repeated after several years. I imagine that TQS shows us the videos to enhance our experience, but the artists are probably willing to allow us to view their videos for free for a time in the hopes that people will like them enough to purchase them (or other stuff) for their libraries. So, a win-win that we get to benefit from.