Jay Z drops a snippet of 'Adnis' from his mysterious new album '4:44'

There's still plenty of mystery surrounding Jay Z's new project/album, 4:44, but we at least know now that it's coming.

The rapper dropped a 30-second snippet of his track "Adnis" online Sunday night, with the album set to be released on Jun. 30 as a TIDAL and Sprint exclusive.

In the trailer for "Adnis," Moonlight's Mahershala Ali plays the role of a boxer, with Danny Glover holding the punching bag -- although he disappears whenever Ali is in the shot.

It does leave us wondering if 4:44 could be a visual album, in the vein of Beyoncé's Lemonade.

The trailer's release coincides with Father's Day in the U.S., and the lyrics uttered in "Adnis" are a nod to that fact.

"Letter to my dad that I never wrote / Speeches that I prepare that never spoke / Words on a paper that I never read / Prose is never pen, they stayed in my head."

It's the latest in a series of steadily building 4:44-related promos, which have also included posters around New York City, another trailer sans lyrics, and ads online. Theories have sprung up regarding the use of the number four, which is significant in the Carter family.

But until Jun. 30 comes, your guess is good as ours.