I know what they doing.
You see right now if you look at the servers they already almost going to get to capicity, there are only 1 of each type of server available. They don't want to make the mistake of releasing loads of servers then some get left as ghost towns. When you buy the game you get 30 days game time. Now some of them may/may not stay on for longer after that period.
Therefore during that 2nd month sub numbers will go down, Thus allowing you guys to migrate to the new realms to fill in on the missing numbers.
Sneaky *********** but well played Bioware well played.