couple things i noticed in the trailer, not sure if it's been noticed or not.
1) the part where you see his hand on new krypton. It's kinda cool cuz you see he has these burns on his fingertips. At least that's what they appear like to me. Perhaps they added a new effect to what kryptonite does to superman. Not only does it drain him of his powers and poisons him but perhaps it gives him radioactive burns too? pretty cool idea there.
2) the last part of the trailer where you see him make the fist in sunlight.. seems like he flies up to get direct exposure to sunlight to reenergize himself. That's pretty cool too since we've never really seen him do that in movies before.
if this has already been talked about, then disregard these observations.