Release Notes: The main update here is the library dependency update to the latest protobuf 2.5 and Netty 4.0 releases. There could be some performance improvements to be gained by upgrading to this release. Note: Netty 4.0.0 is still beta.
Release Notes: SSL socket layer encryption. RPC peers can be simply configured with keystores and truststores in order to perform mutual authentication during the SSL handshake.