It’s another Concept Duel Format.

Each entering player gets 20 Yuri & Starve Venom Sleeves:

Which won’t be handed out in August, apparently.

Entry requires 5 or more packs of Invasion of Venom being bought.

It has the same Concept Duels as last time with one new addition:

Aigami:
Monsters in your Main Deck can only be Cubic Monsters.
You need to have 5 or more different “Cubic” Spells and Traps in your Deck.

No, there’s no ability to play a Yuri Deck this go around.

Source 1
Source 2