"This is Burger King, this is not Taco King here," one person in the commercial says.
Some locations starting selling the tacos before Tuesday's official launch, according to social media reports.
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Twitter user @palmqueezy tweeted Monday "@BurgerKing we need to taco bout this... Who let this happen?"
Burger King's Twitter account responded simply: "Corporate."
This is not the first time Burger King has offered tacos nationwide. According to Comicbook.com, the tacos exited most locations nearly a decade ago in 2010.
Burger King also isn't the first burger chain to serve tacos.
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Jack in the Box said on its website that tacos have been a permanent menu item since the mid-1950s.
Taco Bell added Nacho Fries in January 2018 as a limited-time item.