I see carpet on the flooring in all the images of the Lariat with the optional floor liners installed. I read the optional “Floor Liners, All-Weather Tray Style, Set (incl. Carpeted Floor Mats)" as you get both the floor liners and carpeted floor mats. It’s a two style mat set. Rubber and carpet so that you can use either one when you want. I don’t see floor mats as standard equipment on any trim. I selected the dual mat set with my build.
I went back and looked at some pictures from Car and Driver at the Ford Press Event. Top picture is an XLT Hybrid and you can see the floor carpet. It isn't rubberized. The bottom picture is the Lariat with the All-Weather Floor Liner installed. You can still see the floor carpet going up under the rear seat trim. I would assume all trims have floor carpet.
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