Batman: Arkham Knight Limited Edition (PS/XOne/PC) includes:

Custom Art Book – 80 Page, Full Colour Art Book Showcasing the concept art of Batman Arkham Knight
Limited Edition SteelBook™ – Unique SteelBook™ case and game disc
Comic Book – Limited Edition DC Comics Batman: Arkham Knight #0 Comic Book
Exclusive Character Skin Pack – Three Unique Skins from DC Comics – The New 52
Batman Memorial Statue – Imposing statue commemorating Gotham’s Protector, the Dark Knight
SRP: PS4/XOne ($99.99/119.99 €/89.99£) - PC (99.99€/74.99£)

Batman: Arkham Knight Batmobile Edition (PS4/XOne) includes:

Custom Art Book – 80 Page, Full Colour Art Book Showcasing the concept art of Batman Arkham Knight
Limited Edition SteelBook™ – Unique SteelBook™ case and game disc
Comic Book – Limited Edition DC Comics Batman: Arkham Knight #0 Comic Book
Exclusive Character Skin Pack – Three Unique Skins from DC Comics – The New 52
Transforming Batmobile Statue – Fully transformable Batmobile statue realized in exquisite detail by TriForce
SRP: $199.99 / 199.99€ / 169.99£