https://thenextweb.com/distract/2018/06/27/watch-how-we-made-a-real-life-version-of-mario-kart/

It’s just typical that Nintendo came out with an update for Mario Kart 8 Deluxe that includes Labo support. Why? Well, because the far superior Labooth Kart was set to be launched today and Nintendo has undercut the whole thing.

On a separate note, don’t ask for any proof of release date. My word should be enough.