Bay's video also shows a horde of Vikings, which fits with what we know about Transformers: The Last Knight already. Transformers: The Last Knight will have scenes that take place during the time of King Arthur and the era of World War II, suggesting either flashbacks or time travel as an important plot mechanic.
Filming the scenes set in World War II for Transformers: The Last Knight caused some controversy after it was revealed that Winston Churchill's family home had been redressed with Nazi iconography. It didn't take long for Bay to respond to critics.
Transformers: The Last Knight is the fifth film in the Transformers movie franchise, and is directed by Michael Bay. Transformers: The Last Knight's human cast includes Mark Wahlberg, Stanley Tucci, Josh Duhamel, Tyrese Gibson, Isabela Moner, Liam Garrigan, Jerrod Carmichael, Mitch Pileggi, Laura Haddock, Santiago Cabrera, and Anthony Hopkins. Peter Cullen will once again provide the voice of Optimus Prime.
Transformers: The Last Knight is currently in production, and opens in theaters on June 23, 2017.