Did you mean to say "much newer design"? Because I read the PDF and it's talking about a game concept that was designed after Docking Station.
I think SpaceShipRat meant "much older than the blog post." This appears to be a design for a new Creatures game by Gameware Development, so it probably dates from between 2003 and 2007. It's a shame this "Creatures Evolution" never made it past the concept stage - it looks like it would have been a fantastic sequel to the original games.