It is all but guaranteed. But I think no big news are to expected. It is most just a spec bumb. The macbook pro m4 already leaked on youtube.

Pretty much guaranteed. They explicitly said there would be 3 announcements, and the remaining one is almost surely MBPs.

https://www.macrumors.com/2024/10/28/apple-promises-two-more...

The MacBook Pros with either a base M4, M4 Pro, or M4 Max are said to be due for announcement tomorrow.

Yes, tomorrow.