The preview pages mention a "lightning storm" phenomenon like the one the Narada fell through. That, along with the cover image showing both male and female versions of Kirk and Spock, leads me to think the story will feature a dimensional rift and a meeting of the two universes, a la Red Dwarf's "Parallel Universe."
To me, it suggests we'll see Captain Jane Kirk facing the Narada
or meeting elder Lady Spock. Thomas mentioned the Kelvin
but no Narada
incident. That implies this event hasn't occurred yet. We had that before in the Mirrored