They didn't expand much on the improvements to actors and support for continuations, both of which are quite interesting.<p>Actors: <a href="http://www.scala-lang.org/node/2041" rel="nofollow">http://www.scala-lang.org/node/2041</a><p>Continuations: <a href="http://www.scala-lang.org/node/2096" rel="nofollow">http://www.scala-lang.org/node/2096</a>