Another line they all use is, After the break. And it doesn't mean anything. Judge Napolitano will join us, after the break. That does not mean after this set of commercials, it has a more generic meaning. So, technically they are correct. Even if judge Napolitano shows up 30 minutes later, theoretically, it is 'after the break'.
All the news shows play games to string viewers along as long as possible. That's why if I hear a tease that interests me, I bypass the news and immediately Google it. After that, it doesn't matter how long they draw it out.