This apparently happened a couple months ago but flew under the radar. It hasn't been posted here before as far as I know.
Nintendo invited a bunch of competitive fighting game players including Dabuz and Abadango of Smash fame and Momochi from Street Fighter.
The full tournament has been mirrored on Youtube.
This was before the recent Direct so no Min Min and I don't think the elemental system is on display yet.
Afterwards Dabuz gave his thoughts on the game here.
Additionally the official Japanese Twitter account is now regularly posting screenshots, art, and updates like they did for Splatoon leading up to release.
Nintendo invited a bunch of competitive fighting game players including Dabuz and Abadango of Smash fame and Momochi from Street Fighter.
The full tournament has been mirrored on Youtube.
This was before the recent Direct so no Min Min and I don't think the elemental system is on display yet.
Afterwards Dabuz gave his thoughts on the game here.
Additionally the official Japanese Twitter account is now regularly posting screenshots, art, and updates like they did for Splatoon leading up to release.