PURELY speculation, but I am guessing they didn't really change the ADR system, so technically they can book past the 10th which is why they are having the CM's do it over the phone for this limited time period. I just can't imagine that they would spend a lot of money and time to program it for such a special circumstance, so are using human intervention instead to manually control it. My guess is the only programming they really changed was to the 60 days rather than 180 and they will "turn on" the online ADR when they are ready to, probably with or shortly after the park reservation system goes live.