It looks like the Wunder got an upgrade in the first three images. That strange bay is right behind the head, but according to the 3.0 booklet, that's where the main engine pod and Unit 01 should be. Unless this is a cut-away view showing us what it looks like inside? The fourth is obviously Unit 13 getting poked in the eyes by some strange device. Based on the Eva graveyard in the previous image, I wondered if Neo-Nerv was tapping into it as a power source for the Black Pyramid, but with it being right next to those sketches of Wunder and that other illustration of Unit 01 walking around with the Spear of Longinus, maybe it's implying that Wille did capture Unit 13 and are using it instead?
Can't tell what's going on in the fourth image, but the fifth and sixth are obviously Wunder in flight. The fifth has a hexagonal pattern across the ground in places. Eva series mass AT field, perhaps?