Yes, it does now support up to 20 choices, but it still says ten on the poll creation screen. I guess that hasn't been updated yet. Also, unless he fixed it, there is a bit of a problem with the ordering for items above 10. Look at the test poll for an example of that. I suppose you could take the order into account and list them so that when the order is mixed up it's actually correct. But then if the problem is ever fixed your poll choices will probably be in the wrong order. My suggestion is to just not make polls with over 10 items if the order of the choices counts that much.