Okay, I too purchased D7000 and A3 is not supporting "this new" RAW format (A3 did support my D80).
This is the question: Apple knows very well that camera manufacturers do "upgrade" their format - the same as Apple "updates" their format. This is not new, it's called "continual improvement", isn't it? I am sure that Apple has a "current process" to update A3 to handle format improvements from camera manufacturers. That said, I believe that Apple does have an "expected" date for this update. If they don't, then their business process is lacking and would not be competitive . I don't believe that - I am sure they have a good ol' gnatt chart.
It would be great for Apple, if they would give us an "expected date" for this A3 update. When they don't speak to us, we all wonder if they are listening to their paying customers.