Seems like they're preparing a new part of Time Temple.

Guys, instead of looking it from the story point of view, like I think it should be seen, you are debating Freed style and hair. I'm pretty sure is Freed, and I doubt that Evan will meet Mercedes soon in the story. But perhaps Afrien calls for Mercedes and tells her of the Hero Succesor.

And now that Aslemn told that, well, maybe we didn't saw the Black Mage at all, but the hooded character in the trailer was Akyrum? Seems way more possible.