In that case one should refrain from going on a nationally syndicated radio program and announcing that one has earth shttering news that will divide the country and change all our lives until one has seen that things have come together. To do otherwise is to open oneself to the charges that are justly being laid at Beck's feet. He does this all the time. It's his modus operandi and it's very tiresome.
I don't think Beck will ever, ever report the story he was hyping last week because it was just hype. He needed a ratings bump and he got it. Good for him.
But you are effectively accusing him of lying, without evidence. Even if someone is unable to fulfil a promise, that is not proof of intentional falsehood. At best, it is only proof that conditions he believed would be true did not materialize as expected. You may credit that to a problem with judgment, or something worse, but you can’t know for certain without some direct evidence that he claimed something was true that he knew at the time to be false.
I take defamatory statements very seriously. I have been subjected to some awful assumptions that were completely false, but they damaged me anyway because a lie travels round the world before the truth gets out the door. Or something like that. Bearing false witness against someone is a violation of God’s law, and it should not be done, least of all by those who claim the mantle of conservatism.