> We plan to host a complete Mill development environment in the cloud for public use. It will, naturally enough, break. However, by hosting it ourselves we can capture what failed, and use that as raw feed for our test/debug team. This will give us much better feedback than releasing a SDK for user’s own machines, because users rarely take the trouble to file bug reports.

It seems like they're doing that now mainly to get better feedback. I can't imagine that rationale would make as much sense once their stuff is more stable.