I don't quite understand what they're getting at with the "branching skill trees" - it sort of sounds like what we had in DA:O. Get sick of Combat Tactics, and take a level in Coersion, right? Maybe I'm just reading it wrong.
I really hope we'll be able to choose our character's voice, but since the MC will have thousands of lines of dialog, that doesn't sound realistic. I don't know - what if I'm playing a smarmy rogue who happens to experience a brief episode of honor or benevolence? Will s/he sound sarcastic no matter what my intentions are?
The way I understand it, it means we will be able to reassign the highest level point of that one particular specialization to the highest level of another one, for example, if we are satisfied with the current level of our fire spell and do not wish to take the firestorm, we can instead choose Blizzard (or whatever the name is).
No, we will not be able to choose our character's voice. That would take too much time, even without the newly announced addition - different tones depending on your personality, which means Hawke's voice actor had to record a chunk of lines several times. It is all explained in lengthy detail http://social.bioware.com/forum/Dragon-Age-2/Dragon-Age-2-General-Discussion/Hawke039s-Tone-in-Dialogue-VO-Affected-by-Previous-Character-Choices-4498054-1.html. This feature, to me, is the most intriguing and ambitious one so far and I can't wait to see it in action.
Additionally, here we have a close-up of http://img101.imageshack.us/img101/9884/plugincontainer20100817.png, as you can see, she doesn't look all that young, and my, she does like Morrigan's make-up.