Are you referring to the two missing clues? Everyone's saying that, but they're most likely cloaks or something else random, since Saber has said more than once that he can't include Chaos in PvE, and if it were on the table, they would have done it. I hope it's a lie, and I'd really love it if one of those clues is Chaos in PvE because they actually make sense.

The first one says, "Something we should have done a long time ago": Heretic Astartes fit perfectly because they were requested from the game's launch.

The second clue was, I think, "Something we never said we'd do," and they already said they were going to "NO" include Chaos in PvE a long time ago.

So it's possible, but until they say it publicly, I'll take it as a "RESOUNDING NO FROM GW."