I think I can help just a little bit...
I'm in a WS project 52, which was introduced in 2005, and I'll be using this boat as the largest basis for the comparison and differences in your boat to the newer playboats.
The biggest difference, size, your boat is 8'2" long.. Where as my boat is 6'1" in length. Most playboats are close to the 6'3" range give or take 5 inches. In the two pictures I have here.. notice the considerable difference in tail size, and shape, as well as the shape of the bow, to that of your own boat. What these "newer" playboats have achieved is putting close the same volume as your boat into a shorter, more spud like shape. Hence the nickname spud boats for a boat such as mine. This combined with sharper edges in boat design, allows the paddler to more easily initiate the bow or stern. So why the same amount of volume in a smaller boat? well take the 52 pictured below. if it doesn't have enough volume, the paddler will sink the poor thing let alone be able to throw any loops. To much volume and the paddler has a very tough time pushing the bow or stern under the water. As I'm sure you know. but, I say this to help explain that this boat at 52 gallons and 6'1" in length, has a drastic increase in volume from bow towards the middle or stern towards the middle. (look at the point of the stern then notice how drastically fatter the boat gets, that's the increase in volume I'm talking about.) This allows for more 'pop' when doing loops as well as stability in cartwheels. I said 'sharper edges earlier, and just want to point out that boat makers have been smoothing and sharpening and reshaping the "edges" in the playboats. The lines and edges on the hull and sides of the boat where the bends are in the design. This has made transitioning from left to right edges, cartwheeling, carving, surfing, and even looping easier.
I hope this has explained a little, I think all I've done is confuse you but it's a start.