The U23b's were announced in 2012 and I finally received mine a few years ago. Orders for the RSD7/15's were closed in 2015 so its been 8 years and still no sign of those. By comparison waiting 2 years so far for the F7's is minor.
I remember Atlas posting on this forum some time ago about having problems getting electronics which I took to mean the OEM Cruise Commander boards they use. I just wish Atlas would say something about these delays. On their production schedule if the shipping date is missed they just slide it back another quarter. Makes me wonder if anyone cares about producing the Master Line TMCC engines.
Ken