Okay so wait....why is John Connor surprised that there are "human" cyborgs?
Okay see...cause from T1, the "Future John Connor" WOULD have been surprised by the new terminators, but then he sent Kyle back to protect Sarah. So then Sarah knew about them and brought John up to know what they were, and John himself saw them in T2 and T3. So that means that THIS particular "Future John Connor" should KNOW about the new terminators and be prepared.