We are making a couple of major changes to how class specializations and talents work in Mists of Pandaria. First, your specialization is now completely independent from your talent choices. When you reach level 10, you will still choose one of three specs (e.g. Discipline, Holy, or Shadow priest) to determine your role, play style, and which signature abilities your character has access to. In addition, you’ll receive more of your spec’s defining abilities as you level up.
Secondly, the talent system has been redesigned completely. At regular level intervals (at level 15, 30, 45, 60, 75, and 90), players will now be able to choose between one of three very powerful talents. All three specializations will have access to the same three talent options, and our goal is to make sure that these talent choices are appealing to all three specializations with no obvious “must-have” options for any of them.
Obviously, things can change, but I noticed a LOT of the level 100 talents change depending on what spec you're in...ALL of the druid ones, a lot of the other classes too, though
So now they are NOT completely independent of spec and all three specializations don't have access to the same talents
It just seems like we're trending toward different talent trees for different specs