It appears that the hoopla surrounding the awfulness of the Wonder Woman costume has prompted some very big changes.
If the costume we see being used in actual filming is going to be the permanent costume, it looks like they’ve scaled the hideousness of it quite a bit. First, the pants no longer look like cheap pleather. Second, the stars running the length of the legs appear more prominent in the new version. Third, and probably most importantly, the boots are red.
The result looks like a more complete costume. I do wish they would have toned down the brightness of the red top though. A more subdued color/texture (like the updated pants) would fit better and look less cheesy. Take a look at the side-by-side below. On the left is the new costume and the right is the one that was shown previously.