I have the basic model so there is only 1 vertical base included in the kit - see pic.
Really odd that there no threading.
I captured this from the Festool.nl page of the MFK 700, yesterday;

I think they kinda screwed up with the pictures of what comes with what set, because even the EQ/B version doesn't show the extra layer of pertinax underneath the base in the overview picture.
And that base with copy ring... only USA?
I'm just pondering for myself if that vertical base with the extra layer is a benefit or a drag from simple radius routing. I'm think a drag. But is the extra layer separate...?
@Tukston ; which base came with your model?