When Ubisoft detailed The Division's Season Pass last month, they touched on the three expansions that will be headed to the game for the price of $40. There's more included in the season pass though, such as exclusive monthly events.
According to the details, not only will Season Pass owners will have access to exclusive outfits, weapons and weapon skins. They will also be able to participate in monthly events and content drops.
Plus on March 8, Season Pass owners will unlock the exclusive Sawed-off Shotgun, a unique sidearm customized for short-range destruction. Season Pass owners also receive a set of exclusive outfits and weapon skins, as well as access to special monthly benefits including exclusive content drops and special events.
– Ubisoft
It appears as though the content will not be made available to those that choose to purchase the DLC as standalone content, even after a period of time. Hopefully, Ubisoft will balance the exclusive content with free monthly in-game event for those that choose to disregard the Season Pass.