I'm not sure exactly when the new One Punch Man manga will come out. You might want to keep an eye on official announcements from the publisher or the creator's social media.
Well, the release date of new One Punch Man manga can be quite unpredictable. Usually, it depends on the author's progress and the publisher's schedule. You could check regularly with manga-related forums or news outlets for any announcements.
I'm not sure exactly. It depends on the specific adaptation and how they divided the story. You might have to check reliable anime or manga forums for the most accurate information.