Another status update comment from Ken on the Blog:
Yep, we’re still hard at work!
We’ve reached a big milestone: we’ve declared feature and UI freeze. The documentation is written, we have an intro video and welcome document, and so on. But we’re not quite done yet: we’re still tuning performance and memory usage, fixing glitchy animations, and eliminating crashes. Our test pilots are busy finding problems so you won’t have to.