I feel like this is Ninty testing the waters for the actual interest in more F-Zero, so if people don't download and play this game to show interest they will probably not make another until the next console. Just my $.02 theory.
I'm fairly sure that all of the data was downloaded in one go and they are spacing out the gigaleak releases as they go thru it all and have a grasp on what exactly is inside the file(s)...
I still find it fascinating that people believe that Nintendo is still competing in the console wars. With the Switch, Nintendo gracefully side stepped the console wars and can continue to do so if they continue down this path.
Playing the Judge Dredd arcade game prototype lol I can see why they didn't finish it but at the same time I think it would have turned out pretty good with some minor tweaks to the gameplay