Premature to ask, but any speculation on when more details will come? I'm assuming it's contingent on S and X success.
Tesla announced that they would do Bluestar before they did a new Roadster.
My guess is that they do them at the pretty much same time like Model S and then Model X. Bluestar as platform and Roadster based on that.
My guess for "when" is somewhere in last quarter of 2013 (as in actual concept, not as information that they do them which will come sooner).