In a listing on the Xbox One Store, Dark Souls 3 appears to be getting a Season Pass. One that will bring several features to the game via the DLC packs, two of which were listed. Though no price was given, a description of the pass was revealed, you can check it out below.
“Expand your DARK SOULS™ III experience with the Season Pass and gain access to 2 epic DLC packs at a discounted price. Challenge yourself with new maps, bosses, enemies and additional weapon and armor sets. Prepare yourself once more and embrace the darkness.”
Bandai Namco has not responded to this listing.