I don't think we can really consider it to be "stabilizing" when there are relatively significant and breaking changes like this still going on.

It may be headed in the direction of stability, but that's quite different from stabilizing.

We can consider it to be stabilizing once the language and standard libraries have been frozen, and the only changes happening are very minor ones that are fixing critical bugs.

Until then, it's still in the research and development stage, at best.