It's possible.
The last (or only other) time we had one of these, Min Min was announced the next day, and when there was
a similar tournament at the end of September, Steve's presentation was announced within a few days of that.
Mind you, two similar situations occurring isn't much of a pattern, but it seems possible that we could get an announcement early in November. (or it could mean nothing and be a coincidence)
EDIT: plus, there's the Mario tournament that had an incredibly vague release day of "November or December" that was announced in the Mario 35th Anniversary direct - I don't know how tournaments have worked in the past, but I don't see why they couldn't have given it a specific date, or even had it that weekend. Maybe it's tied to a Mario character reveal that was planned for November or December and they didn't know the exact date, or maybe it's another coincidence.