All rumors are just guesses. There are about 4 people in the whole world who know when the next mergers will take place, and they don't play on your server. They aren't the brother of that guy on your server. They aren't a mod. They aren't the roommate of the girl who grooms that dev's dog every third Wednesday. They didn't sneak the information into a fortune cookie or write it in the bottom of your pie plate.

Anyone who tells you "inside information" or feeds you a rumor is just spreading random guesses.

When it is time for a new round of mergers, you'll know because a system mail will go out to everyone affected.