The whole interface is more or less totally polished and working—that is, all of the other bits of the site apart from the actual game map part itself. As for that, you can select units/improvements, select actions, queue up moves, etc. So, the only part left to be completed is the actual execution and calculation of turns and moves. A rather critical part, yes, which will take a bit of work to get going, but then that’s it.
Stay tuned (but not too tuned), Authority fans!