Before this reality was numbered Earth-346 in Edge of Spider-Verse (Vol. 3) #2, it was designated Earth-19966 by The Appendix to the Handbook of the Marvel Universe. The discrepancy is due to the fact that at the time The Appendix numbered it, the comic was already scripted and being prepared for publication.
The Appendix to the Handbook of the Marvel Universe lists Marvel × Shōnen Jump+ Super Collaboration #1 as the first appearance of Earth-346, meaning it includes not only Deadpool: Samurai, but also all the other stories in the Marvel/Jump collaboration as well.
In the summer of 2024, Shueisha announced the romantic comedy manga Secret Steward #1, which, according to the description, was supposed to tell a story of the relationship between a rich girl and her butler. It was released on August 7, but the manga, as a result of trolling from Shueisha, turned out to be an one-shot instead of an ongoing series and a stealth teaser of the return of Deadpool: Samurai.
