I started a 4th pack, but only got through 3 levels, and one of them is the same terrain/different solution as one of my other levels, another is a remake of my Cheapo level, and I've only got one really new level so far...
But this was a month ago, I've been distracted by other stuff recently and haven't worked on it since then.
I've had some ideas recently though, I should draw them out and get some stuff together..