MongoDB as Akka storage backend Transparent JSON serialization of Scala objects based on SJSON MongoDB backed actor example Support for using the Lift Web framework with Actors Security module for HTTP-based authentication and authorization Support for using Scala XML tags in RESTful Actors (scala-jersey) Support for Comet Actors using Atmosphere AMQP integration; abstracted as actors in a supervisor hierarchy. Impl AMQP 0.9.1 Rewritten STM, now integrated with Multiverse STM Added STM API for atomic {..} and run {..} orElse {..} Added STM retry Complete rewrite of the persistence transaction management, now based on Unit of Work and Multiverse STM Monadic API to TransactionalRef (use it in for-comprehension) New Scala JSON parser based on sjson Smoother web app integration; just add akka.conf to WEB-INF/classes, no need for AKKA_HOME Modularization of distribution into a thin core (actors, remoting and STM) and the rest in submodules JSON serialization for Java objects (using Jackson) JSON serialization for Scala objects (using SJSON) Protobuf serialization for Java and Scala objects SBinary serialization for Scala objects Protobuf as remote protocol Updated Cassandra integration and CassandraSession API to v0.4 Added CassandraSession API (with socket pooling) wrapping Cassandra's Thrift API in Scala and Java APIs CassandraStorage is now works with external Cassandra cluster Removed embedded Cassandra mode Removed startup scripts and lib dir ActorRegistry for retrieving Actor instances SchedulerActor for scheduling periodic tasks Now start up kernel with 'java -jar dist/akka-0.6.jar' Concurrent mode is now per actor basis Fixed dispatcher bug Cleaned up Maven scripts and distribution in general Added mailing list: akka-user@googlegroups.com Improved and restructured documentation New URL: http://akkasource.org Fixed many many bugs