The PC version of Batman: Arkham Knight will soon be available to buy once again, Warner Bros. Interactive Entertainment has said in a press release focussed on the game's upcoming DLC.
A short note on the PC game stated: "The PC version of the game will be available in the coming weeks."
Warner removed the game from sale shortly after the game's launch in June due to performance issues and widespread user complaints. A number of patches later and the performance has improved considerably.
The game's return to stores will likely coincide with an additional game update - the September 3 release was labelled an "interim patch".
Source: Warner Bros