In addition to the highly anticipated game, the Fallout 76 Tricentennial Edition includes bonus in-game items:

Tricentennial Power Armor Customization for the T-51, T-45, T-60, and X-01 Power Armors
Tricentennial Weapon Customization for the 10MM Pistol, Hatchet, and Laser Rifle
Spectacularly Handsome Vault Boy Mascot Head
Patriotic Uncle Sam Outfit
Celebratory Vault Boy Saluting Emote
First-Class Tricentennial Workshop Posters
Tricentennial Commemorative Photo Frame
B.E.T.A. (Break-It Early Test Application) Access! Be one of the first to emerge! Pre-order and get access to the Fallout 76 B.E.T.A.