Isn't it the consensus of historians (the people who would know this stuff) that the actual date is either 587BC or 586BC?
These historians and archaeologists don't really care when Jerusalem was destroyed. They just report the facts as they are. They have no axe to grind. The ONLY people who care about the date are JW's because the entire religion is based on this erroneous date. Without 607, there is no 1914. Without 1914 there is no 1919 when the FDS/GB etc were chosen. The fact that JFR and his companions were released from jail in that year is of no significance.
Of course the average "Jonny come lately" JW doesn't understand any of this anyway.
George