According to the announcement, "Submissions will open at the beatmapping contest portal page within the week." This is most likely where you'll need to submit your diff.Amethyst507 wrote:
Do we have to submit the contest map on a special page for the contest or just submit like every normal map.
Also, repeating a previous question that hasn't been answered, will all keycounts for osu!mania (e.g. 4K & 7K) count as different modes? Or is only one keycount accepted (like in Renatus who only has 7K) ?