Sooooon.
YamaP says
Version 19.3 update included some preparations for the new Arena set which will debut in Mid June.
This new Arena can be unlocked after clearing Alt. Shura Realm 1 (ASR1). It should be difficult but not as hard as Shura Realm (SR3). Name of this new Arena will be announced at a later time.
Alt. Shura Realm 3 (ASR3), on the other hand, is likely to be released in the far future.
19.3のアップデートでは、新闘技場（修羅の幻界のさらに先のダンジョン）を実装する為の下準備も行います。
今月中旬リリース予定なので、上級者の方はお楽しみに〜
裏機構城のリリースはまだまだ先になりそうです。 https://t.co/JDAD9NdD1V
— 山本大介 (@DaikeYamamoto) June 2, 2021
新闘技場（ダンジョン名は後日発表）は、裏魔門の守護者をクリアすると出現します。
難易度は高いですが、機構城をクリアできていない方でもクリアできるかも？！ https://t.co/UWW8QVgNql
— 山本大介 (@DaikeYamamoto) June 2, 2021
Instead of more difficult dungeons I’d be more interested in dungeons with odd requirements. Like how they do 5 star and below for example. But do no wood attribute or all wood required, a certain number of skill boosts required as another example.
But then it’s just the same few teams clearing the dungeon over and over again, versus a much higher variety as with the current arenas.
Makes sense. I think I’m just getting bored with PAD. All I really do is grind ranks and farm while waiting for more content. That’s just me though, probably because I’m getting old and don’t have the attention span I did when I was much younger.