Featuring a GB promo.
The dates and rewards for the Chaos Impact Sneak Preview have been announced in the European Official Websites.

By participating, you get 5 packs of the new set, as well as an Ultra Rare promo of Gladiator Beast Vespasius.

Playmats featuring the cover card, Firewall Dragon Darkfluid, will also be randomly awarded.

Players will be able to destroy their own cards to Summon Monsters, and a new Level-8 fiend absorbs opponents’ Monsters as Link Material. Other highlights include support for Marincess, new Gladiator Beasts including one that negates all Monster effects, and new cards for decks Aromage, Dinowrestler, Evil Eye, Salamangreat, Tenyi, and more.
Chaos Impact’s 100 cards include 48 commons, 28 rares, 14 super rares, 10 ultra rares, and eight secret rares. Name and content are tentative as of this date.
Source: https://ygorganization.com/tcg-chaos-impact-sneak-preview/