So far in its four-film run, the Transformers movie franchise has been fairly divisive among fans. Even though some fans of the classic Transformers properties don't like the new movies, they have been successful enough that the fifth film in the franchise is now in production and more are on the way. Not much is known about Transformers: The Last Knight so far, though more details are slowly being released.

A new viral promo video offers up a hint as to when the next big reveal will occur. Teased as "something wicked" being on its way, the video features a coded message that includes the date May 31.

The video was released on the Transformers Twitter account, with the caption "Something wicked this way comes." It's a short video, only 19 seconds long, with an image of a torn up State Department file visible through static interference. Take a look at the video:

Something wicked this way comes. #transformers pic.twitter.com/biCufISsGE— #TRANSFORMERS (@transformers) May 27, 2016

 

A Morse code sequence beeps as the video plays, spelling out the message:

E I’M COMING FOR YOU MAY 31

Given the "something wicked" reference, it's easy to assume that the reveal will involve the movie's villain. What little has been revealed about the plot suggests that Optimus Prime is searching for information about his creators (picking up where Transformers: Age of Extinction left off), so that could mean that he encounters the villain during this search. The obvious leap is Unicron, the twin of Primus (who created the Primes/Transformers in the comics and cartoons). Not only would it fit in with the theme of Optimus seeking out the "creators," but facing Unicron would also be a major threat that he could encounter while in space before regrouping with the other Transformers and the human cast on Earth.

Unicron in Transformers

Having Unicron as the villain makes sense for The Last Knight, since he is one of the most famous Transformers villains and hasn't yet appeared in the new movies. Having him in the movie would also give director Michael Bay a chance to work with the character before he takes his leave of the franchise. With a character as big and powerful as Unicron, it would certainly allow Bay to leave with a bang.

Of course, we won't know for sure until May 31... Until then, it's all just speculation. Some fans of classic Transformers properties might be nervous about the idea of Bay featuring Unicron, especially given the complaints about how other villains such as Megatron have been treated. Even so, a lot of fans both new and old will likely still be excited at the prospect of seeing Unicron grace the screen in a live-action film for the first time.

Next: Transformers: The Last Knight Starting Production in Cuba

Transformers: The Last Knight opens in U.S. theaters on June 23, 2017, followed by the Bumblebee spinoff on June 8, 2018, and Transformers 6 on June 28, 2019.

Source: Transformers Twitter