A bit more than a theory at this point. The only new armor schematics on any of the databases (Battlemaster, War hero, Campaign, etc.) are for over level 50 items and crew skills can only return schematics that are level 50 or below. It's been 5 days. Even if the datamining sites are wrong, it is highly probable that we would have seen some sort of evidence of new schematics by now. They just didn't do what they said they were going to do. It's hardly the first time.