Borderlands 3: Super Deluxe Edition includes the Season Pass and Deluxe bonus content.

Season Pass:
4 campaign DLC packs featuring new stories, missions and challenges
Butt Stallion weapon skin, weapon trinket, and grenade mod

Deluxe bonus content:
Retro Cosmetic Pack
Neon Cosmetic Pack
Gearbox Cosmetic Pack
Toy Box Weapons Pack
Equippable XP & Loot Drop Boost Mods