Science fiction franchises need to evolve if they want to survive for the long haul. Doctor Who changes up the main star every few years, while Star Trek swaps out its main ship and crew with each new entry. Even Star Wars has attempted to keep things fresh by hopping between eras — even if the show’s loudest fans aren’t interested in evolving with it. But perhaps no franchise knows this more than Transformers. Now, ahead of the 40th anniversary of everyone’s favorite robots in disguise, a new trailer seems to tease one more evolution, but there’s still one big mystery surrounding it.
