'Transformers: The Last Knight' news, spoilers: Viral teaser with cryptic message hints at new trailer?

There is still more than a year to go before the fifth installment of the popular "Transformers" movie franchise hits big screens, but Paramount and Hasbro are wasting no time fueling hype for it.
On Friday, May 27, a new viral video was posted on the "Transformers" official Twitter account, with the caption "Something wicked this way comes #Transformers."
The short beeping promo clip features a torn file from the U.S. State Department. At the bottom of the document, under the United States State Department logo, are the words "File No: 21.63 Date: 10." The rest of the date cannot be deciphered because the page is torn at that spot.
The flickering image is accompanied by Morse code lasting approximately 19 seconds. According to Screen Rant, which translated the code, the message says, "E I'm Coming For You May 31st."
The video clip and its coded message are now being taken to mean that a trailer or other promotional material for the upcoming "Transformers: The Last Knight" could be unveiled on Tuesday, May 31.
According to Entertainment Weekly, filming of "The Last Knight" is ongoing in Cuba with cast members Mark Wahlberg (Cade Yeager), Josh Duhamel (Lieutenant Colonel Lennox), and Isabela Moner. Michael Bay, who directed the first four "Transformers" films, is back at the helm on what he has said will be his final "Transformers" film.
In 2014, Bay dropped some hints about the plot of the upcoming "Transformers" installment. In an interview with EW, the director said that the ship flown by Lockdown in "Transformers: Age of Extinction" (2014) could play a major role in the rest of the films in the franchise.
"Lockdown's ship has a lot of meaning that can go into other movies," he said. "There's a lot of backstory about that ship that's not laid out here."
"Transformers: The Last Knight" is scheduled for release on June 23, 2017. It will be followed by "Transformers 6" on June 8, 2018 and "Transformers 7" on June 28, 2019.