Assassin's Creed: Odyssey - Deluxe Edition includes:

The Kronos Pack (Including 5 epic pieces of armour, 1 epic weapon, 1 epic mount).
The Herald of Dusk Pack (Including 5 rare pieces of armour, 1 rare weapon).
The Capricornus Naval Pack (Including 1 ship design, 1 crew theme).
1 Temporary XP Boost.
1 Temporary Drachm.