IF it was a major format change, they would NOT be talking about for days.
IF it was a format change, the on air people would NOT be allowed to talk about it, much less circulate a petition. (Even if that was true, it wouldn't work anyway. It hasn't worked before and it won't work now.)
IF it was format change, the on air people would be the last to know.
You are doing exactly what they want. Get everybody to talk about what is happening on Hot. Oh, I'm sure there will be some kind of announcement; but it won't be a format change. You are making a big deal out of nothing. My opinion is subjective.