Enter the Clans is a field guide that states to be a combination of Cats of the Clans and Secrets of the Clans though it is really a combination of Code of the Clans and Secrets of the Clans. It will be released on June 26th 2012.
The cats on the cover could be (on the top) Bluestar or Mistystar, Tallstar, Onestar, Brokenstar or Tigerstar, below them the same thing
(on the bottom) Rowanclaw, Brambleclaw, Tawnypelt, and Ashfoot.
It could possibly leaders with deputies below them, though if this were true the descriptions would not fit them.