I was thinking maybe what if they have some lines ready and tease something at E3 maybe is just wishful thinking.
Yeah, anything at E3 is wishful thinking right now so don't get too excited.
On if they have lines ready , well... they've definitely got some recorded from what we can see, but it's another question to implement, animate, and test all that in the game. Plus, what they've recorded so far might not match up with scenarios they would want to show in a promotional video, and won't want to jump around in the production process just to record (and possibly implement/animate) trailer lines that'll get redone later anyway.
Gamescom is still our best bet for seeing more.
Your definitely right on everything you said Spaghetti. I had no idea it was a long process implementing all that together. I guess we should all wait for gamescom then.