It may not even be a factor but since the regulated age has changed, I would bet the company would come to the table with that as an opener.

Let me put it to you this way, would you accept an age 65 retirement change for an immediate 40% pay raise at signing? How many years do you have to go until you get that "promised" retirement benefit? Money in your hand today is more valuable than the promise of money tomorrow; especially with THIS company! A change to Age 65 without a HUGE monetary increase is a deal breaker for me also.