Taylor Swift is back (already?!) with a new single, "Patient Zero," which drops this Friday (September 25).

Earlier this week she teased the release by changing her Instagram profile text to "And, baby, that's sh0w business f0r y0u," and we now know that the three zeros represent the three limited edition CD versions of the single available to buy on her website for the next 24 hours only.

Fully on brand for the queen of variants, each CD contains only a single track – the full band recording, an acoustic version, or a piano version – and each one comes with different cover art and a "Side B photo," in place of an actual B-side.

There's not much other info out there yet, but it's worth pointing out that Taylor was once described by LA Times journalist Amy Kaufman as "patient zero for emotional contagion." Could it be related? We'll find out Friday.