The first launch of the latest game with The Dark Knight made many PC gamers unhappy, but good news are coming now that Warner Bros has announced Batman: Arkham Knight will be re-released on PC on October 28. For customers who already got the PC version before being removed from Steam, WBIE will also release a patch which includes updated content already available on consoles, such as Photo Mode, Big Head Mode, and many challenges, packs, tracks and skins.
[Source]: Batman: Arkham Knight (Steam Community): PC Release Date Announced.