@sometime sun,
I don't know yet, right now we are moving so fast that it would mean slowing down by a lot in order to get predictability beyond a certain point.
If that is unclear, what I mean is that we are working at a pace that doesn't let us have much visibility beyond the immediate future (the alternative is to slow down and sandbag estimates).
So right now we have our first big iteration cut out for us and it's explained on the blog. I expect this iteration to take about 14-21 days (just an estimate, again we are prioritizing speed over reliable estimates).
After that we will reassess our direction and choose the next tasks, and it's very possible that such data imports will be part of the next rounds.