i think sasuke has basically the same kind of attitude as he did before, wants the power to kill his brother, but i think he will be harsher a little more evil but i don't think he will be as evil as orochimaru, only when someone comes in the way of his goals.
also he is needing to make his escape soon, or how ever he gets outta orochimaru's grasp.

i really want to see the other ninja's at this point, it seems we will see at least shikamaru in 247, and hopefully some others.