Alright so i've calmed down and read carefully now.
It's a series so i think we can expect at least another one soon that will have the Mario stuff.
Not quite, re-read it. The series it's talking about is 'Partner Showcase'. I don't think it's implying a series of mini-directs, at least not in the near-future.
I wouldn't mind a mini-direct every month though. At least for this year with everything being out of whack. Hard to imagine they don't have one notable Nintendo game on the way for the holidays.