Yesterday Bungie announced this week’s featured mode for Crucible Labs, one of the many improvements being made to Destiny 2 as part of Season 3. In Crucible Labs Bungie put certain Crucible Modes up for players to experience and give feedback on, which may affect whether or not the mode will make it into the main playlists some day or go back to the drawing board.
Source: N4G PC Crucible Labs Featured Mode Is Showdown