The MacRuby team reckons it's "stable", in the sense that the API shouldn't change too much in the future and it probably won't crash. But there are good reaso

The MacRuby team reckons it's "stable", in the sense that the API shouldn't change too much in the future and it probably won't crash. But there are good reasons Steve might not yet consider it mature enough for the iPhone. For one thing, gems don't work yet.