I have seen in a couple of different places that Bioware is looking into neutral options. So I am satisfied to wait.
I did want to address folks who think everyone that is neutral intentionally chose the neutral path. While some may have, I think its obvious that it 'just turned out that way' for a good portion of folks who just 'played their characters'. For example, my Bounty Hunter always fulfills a contract, but avoids killing children and civilians when possible. Guess what, she's grey. Although she occasionally leans one way or the other, the end result is grey. We aren't busily balancing 'good' acts with 'bad' acts, that's just how the net result of our choices turns out.