In a post to the official Borderlands website made on Mar. 24, Gearbox Software revealed that a limited time event dubbed the Takedown Shakedown was going live afor all Borderlands 3 players. During this event, players will be able to nab extra loot from the Takedown at Maliwan Blacksite end-game mission, and will have a better chance of getting rare loot.
Source: N4G PC Gearbox Launches Takedown Shakedown Event for Borderlands 3