2 publishing servers connect to one terminal server agent

We have a situation where we need to have 2 publishing servers connect to one terminal server agent. I don’t believe this is currently doable in v6.0 build 421. I’m sure I’m not the only one who could use this feature. Here is our scenario: We have 2 sites each with their own 2xPublishing Service. Our ERP system is located at one site. It has a test system on a different server which both sites currently connect to test and train on without messing up live data. We need to be able to publish this test server from both sites. Is this feature in the pipeline? If so do you have a guestimate as to when it might appear?