A new Delves Bonus Event is coming in the War Within expansion!
The first Delves Bonus Event is slated for October 1, 2024. According to the in-game calendar description, Delves will grant increased rewards for intrepid explorers while the event is active, resulting in more loot found in the Treasure Room at the end of Delves!
Delves are a really cool feature if you plan on playing solo or with a group of friends. You can gain loot at the end of delves and they are now included in the weekly chest!