It looks like some level of drag & drop functionality will be making an appearance in the upcoming Thesis 2.0 according to a comment left by the developer over at his personal website (well worth a look, by the way.)
… you’ll be able to drag and drop the elements of your site with the next version of Thesis.
I can’t imagine the implementation of this to be anything like Headway theme, though, whose USP is entirely about the drag & drop / visual layout approach. No, I expect it’s much more subtle than that.
