Brightcove Player version (see links below for details):
Available version entries
Available version entries (formatted like v1.2.3) indicate a Player version that has been made available as a pre-release for manual update through the Studio JSON editor or the Player Management API. These entries represent every version of the Player that is available for use and the changes each version includes from the previous available version. When a Player version is made available, no players are auto-updated, but they may be used for verification of bug fixes or similar.
Current pre-release entries
Current pre-release entries (formatted like v1.2.3-pre-release) record the time when a Player version has been promoted to the current pre-release state. This will cause players that have opted-in to the latest pre-release in Studio to be auto-updated. Not all available versions become a current pre-release.
Stable release entries
Stable release entries (formatted like v1.2.3-release) record the time when a Player version has been promoted to the current stable release state. This will cause all players in automatic update mode in Studio to be updated and republished. Further, this sets default version for newly created players. Not all available versions become a current stable release.