When it's done it will be released.
Todd Hollenshead of ID said, "We've got the demo to wrap up and the programmers are working on getting the dedicated server wrapped up so once those two things are done we'll start focusing on getting the Mac stuff done so we actually have a pretty full slate. After the announcement everybody kinda took the next day a little easier, but for me the activity level has actually picked up here recently. Out of the frying pan and into the fire."
so it looks like we were on the back burner for a while.