Only clue is that it is listed a single piece so my first...

Only clue is that it is listed a single piece so my first thought was that it was not going to be the shell design.

Possibly diversifying and getting new product space as lots "egg"style product out there and this is more based on toy than the chocolate. To have a decent size and better quality collectable animal which is hollow and has info and small choc inside is my first guess. Animal made of several large pieces so it gets put together. All guessing. Go and accost Rumble and make him squeal!!