http://doc.akka.io/docs/akka/2.1.1/intro/getting-started.html mentions http://repo.typesafe.com/typesafe/releases/
but it doesn't contain akka-2.1.1

http://letitcrash.com/post/44059382043/akka-2-1-1-released says:
The artifacts comprising this release candidate have been published to https://oss.sonatype.org/content/repositories/releases/ and also to Maven Central. In addition, we adopted the SBT standard of encoding the Scala binary version in the artifact name, i.e. the core actor package’s artifactId is “akka-actor_2.10”.