There are 6 book sets since 2011:
~Little Horse (with variation brown falabella 70611)
~Little Polar Bear (with variation? polar bear cub 70612)
~Little Lamb (with variation white and brown/black lamb 70613)
~Little Panther (with variation black panther 70614)
~Little Lion (with variation? lion cub 70615)
~Little Fox (with variation? fox cub 70616)
I don't have any, unfortunately, as they are not sold in the United States, so I don't have comparison photos, and I am not sure if the polar bear, lion, and fox are variations. I'm sure someone else on this forum can verify for you. :)
Here is the link directly from the Schleich site:[You must be registered and logged in to see this link.]
As Alvaro mentioned, these are not special editions but rather a special set. :)
The other books published by Schleich are the 75th anniversary "Anywhere's a Playground," the Bayala series ones, and the "My Big Book of Schleich Animals (70617)," which I have not seen anything inside yet. Possibly someone here has it?
Hope that helps!
I hope to see photos of your new figures when you get them!