Following the recent Campfire Chat Developer Livestream on March 20th, Blizzard has been providing extra details regarding some of the upcoming changes and features we can expect in Diablo 4 Season 4. Recently, Blizzard has confirmed that the new Uber Boss Andariel will be an alternative to fighting Duriel for the coveted Uber Unique items such as The Grandfather.
The information comes from Game Director Joe Shely, who also noted that all of the other major bosses such as Beast in the Ice and Lord Zir will have a notable chance to drop Uber Unique items as well. Later, Shely added in a reply to a player's question that the drop rate for Uber Unique items from bosses such as Beast in the Ice and Lord Zir would be significantly higher than the normal odds in average gameplay.
However, Andariel and Duriel will still have the best odds for players.
These changes are certainly a welcome addition, as players will have even more ways to get decent changes at claiming powerful trophy items. This will also relieve some of the fatigue some players have noted about fighting Duriel endlessly.