Nintendo has just announced a special video presentation that’s set to run right before all the E3 festivities begin. It’s for Super Smash Bros., and it’s being hosted by Director Masahiro Sakurai.

What is it? We’re not sure. The email indicates that the June 14 update will bring Lucas, a Miiverse stage on Wii U and Splatoon Mii Fighter costumes to Smash. This presentation comes “to celebrate this update.”

And that’s it. They offer, completely with italicized emphasis, that “you definitely don’t want to miss it” at the end of their email.

We’ll see. The presentation will air on Sunday, June 14 at 7:40am PT. We’ll have more on whatever they’re planning as it comes.