Fidelity is the only broker for new users in the United States. No FX, no futures. If you have a copy of Wealth-Lab Developer that was purchased prior to the Fidelity deal you can use the IB interface.
I was also looking for an answer to this question. The closest thing I managed to find, is automated trading using VT Trader - which is a forex trading platform - by CMS (http://www.cmsfx.com) The scripting environment is not as nice as in Wealth Lab, but still, I found VT Trader to be a good platform for this purpose.