Version 1.54 (Garozzo) has lots of new features and improvements, see below for the highlights and the full release notes.
This feature give extra resilience when you have multiple internet connections - you can run L2TP over each connection to a FireBrick at a far end and duplicate packets over all the links. This doesn't increase bandwidth, but means that if a link drops or has packet loss your packets will still arrive at the other end.
The CLI has previously had commands that were not available in from the web UI, including searching through the precises being received or sent to a peer. This is now available in the UI.
The FB2900 has hardware support for IPsec, this is now optionally available to be used. The benefit of this is that some of the CPU processing is off-loaded to other hardware. Throughput will also be improved a little when using this option.
Web config editor