Just a few small changes made:
1. Added a couple analog switches to the cloning connector's RXD/TXD lines - so there is no longer a need for a "null modem" cable, since the master can swap those lines internally with this change.
2. The Cloning Connector is now the Cloning & Control Head Connector - it can serve both functions. An additional pin was added to the connector so that a Control Head can provide power to the transmitter's processor.