Batman v. Superman: Dawn of Justice was pretty much a train wreck, but the extended cameo by Gal Gadot as Diana of Themyscira was by far the most compelling part of the film, and both trailers have just whetted my appetite for more. And this trailer uses the incredibly awesome music cue from BvS:DOJ, OMG it's awesome!!!!!
Pardon me, I'll be in the corner squeeing.
EDITED TO ADD: I suspect that a very popular cosplay at San Diego, at NYCC, at Dragon Con, and in general at conventions in summer and fall 2017 will be women in blue dresses with swords sheathed in the back....