Even with a studio working on a new game, there will still be teams working on bugs and performance. And they probably have some content stuff in the pipe to be finished up. The VA's have been doing their goodbyes to the characters.

But players keep coming up with ideas for *major* new content additions, like new companions and races and classes -- and I really doubt that any of that will happen. The game doesn't need it, as pleasant as it would be to get.