After the Halloween patch on October 30, more community finds about future Deadlock content spread on X. Below are two different signals: a datamine from the patch files and a retelling of a leak from insider Ghostwriter. Both came through Deadlock Project 8. Valve did not mention a Battle Pass or Arcade Mode in official Steam news. Treat this as unconfirmed rumor.

Datamine: Event params and Battle Pass

On October 30 Project 8 wrote that the Halloween update added Event parameters in the client, and that parameters 9, 10 and 11, in their words, "confirm that they are working on the Battle Pass".

What that actually supports:

  • Community researchers did dig through files after the patch.
  • The line "working on the Battle Pass" is Project 8's read, not a Valve quote.
  • No Steam announcement and no other official channel has announced a Battle Pass.

Later the same day the same account pinned a short post about `LootListRewardData` with the words "battle pass coming". That is still a community file read, not a release.

Ghostwriter leak: Arcade Mode in the Hideout

On November 1 Project 8 posted a long thread: Ghostwriter was back with a batch of rumors, and the write‑up started with Arcade Mode.

Per Project 8's retelling (not Valve's words):

  • This is not a full separate matchmaking mode, but several activities inside the Hideout you can play with friends or solo, including while you queue.
  • The modes supposedly have Standard and Mystic variants.
  • The build stage is called very early.
  • Listed activities include a piano, chess, an arcade cabinet with a Fairfax game, billiards, tic‑tac-toe on the rank board and a fast card game under the working name "Mystic".
  • Closest to a more complete version is supposedly Mystic Chess: a match against Solomon, or if you are Solomon, against a "magic hand" with boss‑fight style limits.

In the same thread Project 8 retells a closed Valve Q&A for a small circle of creators and journalists (supposedly before the Halloween patch): no ship dates, broad talk about experiments and that skins will exist in the game. Almost no detail on the skin system or dates, and Project 8 itself asks readers to take Ghostwriter "with a grain of salt".

What this does not mean

  • That a Battle Pass is ready or ships on date X.
  • That Arcade Mode is already live for every player as a finished feature.
  • That the tier list, ranks or the in‑game economy already shift under these rumors. For current ranks still use Deadlock ranks, for heroes Deadlock characters.

If Valve posts something official, we will update this from the Steam announcement. Until then these are community rumors and datamine with attribution.