The reward for clearing will be item level 345 weapons, the same level as the Deltascape (Savage) weapons.
As a result, if players want the strongest equipment, they are not necessarily required to clear this content. However, these weapons will graphically stand out quite a bit.
Additionally, players are rewarded with a token upon completion once per week. Were planning to make the token exchangeable for a weapon of your choice, so clearing the fight will guarantee one weapon. Just remember that the rewards are set this way because the content itself is that hard.
*Please note there was an error in the live broadcast update thread, and the above information is the latest information.
The maximum item level will not increase during Patch 4.1. We are putting in the utmost care to make final adjustments to the difficulty, to make sure that this content will not be so difficult that not one person is able to clear it during the duration of the patch.