One Piece Chapter 991 was released in the latest issues of the Jump. At the end of the chapter, it was said the next one would be October 4th.
However, VIZ just updated its ONE PIECE schedule with next chapter coming in 13 days, which would point to October 11th. Whether there’s a 2nd break or not, we’ll have to wait for an official statement to confirm. At this rate, we can pretty much assume there won’t be chapter this week.
Also, according to MANGA Plus, ONE PIECE would be entering a 2 weeks break for Issues 44 and 45, resuming back in Issue 46 that will be out on Friday 16th (Saturday 17th JST).
So right now, that we have the chapter or not this week is in a weird place. There could also be a situation like we don’t get the official release, but get the scans. There’s no confirmation yet about this, so we should wait until we get an official statement.
ONE PIECE had no breaks planned for the upcoming issues, hence these being emergency breaks, and Eiichiro Oda had just commented on his idea of publishing new chapters in order to reach 1000 chapters this year. We should be getting a statement this week if this is indeed true.