After searching, I didn't find information here pertaining about this subject. All credit goes to Amanda Miller of WoW.com. I'm just relaying this to the MMOwned public as I read this site more than WoW.com.
And I quote:
"This is a new dimension to character customization. Rather than being practically a clone of every other character out there of your class and race combination, you will be able to differentiate yourself in new and unexpected ways.
I mentioned before that our talent trees will be different too. While we will be gaining five levels, and thus five talent points in order to reach the new level cap, 85, there will be no new talents added.
Instead, we will be using the Paths of the Titans and a new Mastery system to customize our characters. The Mastery system is set to simplify the talent trees. Mastery passive talents will then be available based on the talent tree you choose, and offer some of the core talents like "+10 damage" or "+ Heal." Regular talents will offer a greater variety, and more interesting choices, but will lack some of the functionality of Mastery abilities. The more points you invest in a given talent tree, the more Mastery abilities you will be able to receive."
This seems like a great yet harder way to gain your passive abilities unless they depend fully on the amount of talent points used in the specific tree. I'm sorry for this, but I just wanted to post it and also give my input on the subject.
My thoughts: I believe this will both hurt classes and help them. The father along you get, I feel your DPS, Tanking, Healing will all benefit from this as they progress. It is overall a good idea in my honest opinion.