Although Call of Duty: Advanced Warfare's Havoc DLC isn't yet available, Xbox Season Pass holders now have early access to the expansion's bonus weapons.
Starting today, Xbox Season Pass owners playing on Xbox One or Xbox 360 can download the bonus weapons — the AE4 Directed Energy Assault Rifle and the AE4 Widowmaker Custom Weapon Variant. As you can see in the trailer above, this new, deadly weapon combines "a versatile firing mechanism with all-around movement speed and handling."
I don't know about all that fancy jargon, but the new weapon looks pretty badass.