Beyonce Teases New HBO 'World Premiere Event' Titled 'Lemonade'

— -- Beyonce is such a tease.

The pop star today released a 16-second teaser video with the simple caption: "#LEMONADE 4.23 9PM ET. HBO."

In the video, Beyonce, 34, is sporting blond cornrows -- similar to one of her looks in her latest music video "Formation" -- leaning on what appears to be a car. She cryptically says, "What am I gonna do love, what am I gonna do?"

There's no word on what "Lemonade" could be, but Beyonce's fans -- known as the Beyhive -- have been buzzing about it since last month, calling it a "short film."

ABC News reached out to the singer's camp, but so far no word back.

Beyonce has been posting lemon-themed photos on Instagram for months. And now it all makes sense.

Beyonce is known for pulling off surprises. In fact, her most recent self-titled album was a surprise to fans when she released it in 2013. She also released her first single, "Formation," from her latest album without notice.

The singer is currently on her Formation World Tour, which hits the U.S. in Miami on April 27.