looking to pitch in Note that this page only lists what has been added in each release
At some point we should get a full list of features published. If you don't see something, mail the users@qpid.apache.org
list and ask. good chance we can do it 
M4
...
Add the following Features
- .NET, WCF and excel support for AMQP 0-10
- SSL added for C++ broker and all clients
- Windows port for C++ client & broker
- Solaris port for C++ client & broker
- C++ Broker
- ACL
- Active-Active clustering
- Federation, push bridges & dynamic routes
- RDMA for C++ broker & C++ client (70-80us, yes us max latency on a well setup machines)
- support for message TTL
- Queue options
- added RING/ STRICT ring
- LVQ
- Exchange options
- LVE
- message sequencing
- XQuery based XML Exchange now as plugin
- Performance work
- Management for AMQP 0-10
- QMF C updates
- Python
- C++
- QMF Agent
- C++
- QMan JMX bridge for QMF
- Alerts/ logger for QMF events
- QMF C updates
- JMSXUserId
- Java broker
- Message Priority
- bug fixes
- some prep work for AMQP 0-10
...