Three more cards have been revealed on the Official Yugioh OCG twitter account. The last one is more of a reprint though…
Normal Trap Card
Continuous Trap Card
Activate this card by targeting 1 Dragon-Type monster you control with 2500 or less ATK and DEF. Neither player can Special Summon monsters with ATK lower than or equal to that target’s original ATK. When that monster leaves the field, destroy this card.
Mathematician in the Descend of the True Emperor Structure Deck