There may be a few questions to answer, but early in training camp, it's the defense making the most "noise."
When the offseason began, the Cowboys' brass knew very well what their objective should be. In fact, they practically told everyone prior to the draft exactly what they were going to do. It began with the defense and early in camp that's exactly what everyone is talking about.
In the NFL, the Cowboys aren't inclined to sneak up on anybody, but none of the major outlets have touched on what this defense could actually be in 2015.