<進撃> or <Blitz> in English (until Bandai gives us the official name) is introduced as a new effect in BT-05. Usually paired with [When Digivolving], this effect allows the Digimon to attack even if the memory is 1 or higher at your opponent's side. This effect is similar (albeit weaker) to [BT4-090] Chaosmon's, but does not naturally unsuspend your Digimon or allow you to attack an opponent's active Digimon.
A handful of Digimons with same-level digivolution (LV6→LV6) were also introduced. These Digimons typically have a [When Digivolving] effect and cost significantly less memory when digivolving from it's same level.
White tamer and option cards were also introduced for the first time. The rules to play a white option card are still unconfirmed, but we shall know in the coming weeks whether a white Digimon or white tamer is required as a pre-requisite for playing white option cards.
Dual tamers are also introduced in BT-05, granting a stackable +2 memory at the start of your turn if a condition met. There will be 3 of these tamer cards in BT-05, one each for blue, green, and white.