In a Tweet and a post on their official site, Bandai Namco has revealed the release date for Soulcalibur VI DLC 2, including Nier: Automata’s 2B as a playable character. Initially announced back in October, the android will be joining the stage of history on December 18, 2018, alongside her stage, background music, and an assortment of items for use in character creation. She will be available both standalone and as part of the season pass.
In addition to 2B, the publisher also announced that Soulcalibur VI will be receiving a Ver1.10 update on December 17, including a variety of system changes as well as several balance adjustments for all characters. The full patch notes can be found here. There will also be an update to Ver1.11 coming in the near future, apparently carrying further system and balance adjustments.