We do plan to do some more Studio podcasts, but want to set things up so we can do them on a fairly regular basis. It's taking a little while to put the necessary procedures in place to make this happen, but we will get there soon! Unfortunately I think it will take rather longer before we publish any further information on the Adeptus Mechanicus. Until we do your best bet for background information is tracking down second-hand copies of old Epic and Titan Legions material.