I'll gladly volunteer to cut releases of filevault outside of the JR release cycle. I think filevault will have a very different release cadence than the rest of JR (let alone Oak).
Do we have someone to take care of cutting timely releases from jackrabbit/commons? So far we haven't been too successful with that. Otherwise I suggest to put the code to .../jackrabbit/trunk/filevault and have it as a part of the normal Jackrabbit release cycle.