Manual Kasper has released another m0n0wall beta release bringing the project closer to the release of the final m0n0wall 1.3. According to the announcement:
The move to FreeBSD 6.4 has been completed, and legacy BRIDGE has been replaced by if_bridge (thanks to Chris Buechler), so if you’re using the bridging features, you may want to test especially carefully whether everything works as desired after the upgrade.
Also, the filtering bridge is now always on (this is by design), so you may have to add firewall rules to permit traffic on your bridged interfaces if you have not already done so.
Various bugs have of course also been fixed (for the SIP inbound NAT problem, advanced outbound NAT slowness when using destination matching, DHCPv6 range check, etc.)
For more info, the changelog and downloads visit the beta page