we've just released Autobahn (for Python) 0.14.0.
There are some nice things packed into:
In particular, the (internal) use of batched/chunked timers for automatic WebSocket ping/pong (connection keep alive, fast connection loss detection) now has dramatically reduced CPU load with large connections counts:
Also: WAMP now has another serialization format (completely transparent of course): UBJSON
We now support: JSON, MessagePack, CBOR and UBSJON
The addition of UBJSON was mainly triggerd by the needs of the upcoming new AutobahnC which will run on RIOT-OS (http://www.riot-os.org/). But that is a different story;)