I totally agree with the possibility of deceptive rumors being purposely started!! I used to work for Gateway Country and you wouldn't believe all the different rumors that were flying around when we were being "phased out". If they merge, one group of managers and execs will be out of work, so they have no reason to tell the truth to anyone until after they pull the trigger IF there is actually a trigger to pull.
I love the thought of the programming possibilities a merge would offer, but I wouldn't place any side bets on this one. Just wait till the dust settles.
As for CEO statements, unless they are in court don't trust them (sometimes, not even then!)