This is the latest development of the internal structure for pavelow models. With previous generations there was some concern for structural integrity on the tail section. With this new design and increased use of structural elements, this should be more than capable of handling small impacts without shattering. (I sent a few across the pond and for some reason the tail shattered on two out of the orders.) This should eliminate that and make the internals look even better. New additions include the electronics suite on the rear shelf at the top. It’s just a small improvement you’ll never see but when has that stopped modelers before?