Nothing will come of this. They may indict a couple people, but those people will be cleared of all wrong doing. If we're lucky one of them will commit suicide, however there will be no sweeping changes as KBR and civilian corporate interests are so thoroughly interwoven with the fabric of both wars that to really disrupt the companies would be overturned not just by the senators that have a lot of contracts from these companies but by the Pentagon which would see a huge security risk by really shaking the pot.
Before my brother headed off to Iraq he worked in the commissary at a large base in the West, and he was constantly at odds with all the civilians who was working with him, often supplied by independent staffing companies. He told his chief he thought this was a serious security risk. A couple months after he had this conversation a civilian commissary worker in Iraq blew himself up in the kitchen and killed several of our guys.
The problem is these people save us so much money, and the system is so entrenched, that to change it we might end up losing both more money and possibly more lives from the upheaval. Or so they will tell each other behind closed doors.