My philosophy on this kind of thing tends to be to do what you have the info to do as far in advance as possible; that way, when they release the last bit of information at the last possible minute, that's the only piece of information you have to deal with. You don't find yourself scrambling to input a few dozen FIPS codes that you've known about for months, or trying to figure out why the box's internet connection isn't working, etc.,. etc...