[sink]

Scala simply doesn't move that fast and doesn't break that often. I can say that as someone who has been using it since 2.7. (Some of the thirdparty Scala libraries on the other hand will are close to giving me aneurisms ...)

At its current velocity, Scala is hitting a sweet spot in between improving language features and dropping cruft. The way you can change language features via imports is awfully nice a well.

Note that most of the major library providers for Scala jump on the new versions of the language while it's still in the milestone stages of development. Examples are scalaz and akka.