Mostly better sound, a couple of things were cut from the leaked version, but nothing important probably just to get it at the 43-45 minute length, it was 46 minutes.
The biggest change (and it was an excellent change, extremely happy) was the scene between Alex and Kara at the DEO when Kara is walking out. That IMO was kind of weak in the pilot. They went with a MUCH STRONGER take and this take showed the actress that Melissa is...I was very happy with that change, you could see and feel that she was hurt that was an important scene and the change was good.
Other than that, no, it was pretty much the leaked version.