I don’t think that’s a rule where they don’t do new announcements at the Showcase.They don't do new announcements at Capcom Showcases so makes me think if there's really a Nintendo Direct before that. Maybe with AA7 and/or Megeman Legends Collection announcement. They won't have whole 36 minutes for just DD2 and Exoprimal...
But Directs are always on Wednesday or Thursday, so it can't be...
Last year their showcase around the same time said “updates on previously announced titles”. This year is “new information about upcoming releases and future titles”. It sounds like there is a chance they do have some reveals