And why oh why change Mjolnir??? It was perfect. The costume changes can be justified, but the hammer changing cannot. What, Thor trades it in for a newer model? LOL
I think Mjolnir should've been kept the same also. How can you change the design of a godly weapon lol maybe Stark upgraded it ... with a silver end-cap
Hmm, looks like someone didn't get his hair dyed! I assume this is from early in the shoot, before they needed any mask-less shots. Could be the end of shooting too, I have no idea what the schedule is.
EDIT: Fixed the pic
I don't like most of the costume changes, especially Captain America, but I'm glad they went back to a round arc reactor for the MK7.