They have only one guy writing the drivers (maybe two) and that's why they are backed up. Because of the future release of the RPZ-6 things have come to a grinding halt. I understand their concern for letting people write there own drivers but they should take the policy that if you write your own driver you will not get 2-way support. It's like they are feeling their way through this transition and waiting to react. Oh the zigbee doesn't work let try this or the driver doesn't work lets update this. I hate to say that C4 is looking better every day. At least they are in charge of their destiny!