Prior to the release of every DLC since the Clown, a Public Test Build (PTB) is discharged, which allows the developers of the game to test and receive community feedback on the major upcoming changes. Once the PTB has been out for roughly two weeks, it is disabled for further maintenance on the pertinent upcoming DLC, such as bug fixing, adding missing features, etc. before the DLC officially gets released. The estimated time span between the opening of the Public Test Build and a new DLC's release is approximately 2–3 weeks, and the DLC typically releases a few days after the shutdown of the PTB.