Here's a list of the four Tekken 8 pre-order versions you can choose from, as well as bonuses and content included in each package.
Tekken 8 Pre Order Bonus - Gaming News
Tekken 8: Which Edition to Choose?
Tekken 8 pre-order guide: Editions, pre-order bonuses
Last Chance To Preorder Tekken 8 - Get Exclusive Bonuses At And Best Buy - GameSpot
Tekken 8 Collector's Edition Preordered to Receive Date : r/Tekken
TEKKEN 8's $500 Collector's Edition Is Available To Pre-Order Now
Tekken 8 Preload: Gear Up for Action Before Release - News
Tekken 8 Pre-Order Guide, Editions & Bonuses
Tekken 8 Pre-Order Guide
Tekken 7 Editions, Tekken Wiki
Tekken 8 Ultimate Edition Pre-order
All Pre-Order Bonuses for Tekken 8
Tekken 8 Pre-Order Guide
Tekken 8 ultimate and deluxe editions revealed