...... they announced Master line F7s in their Winter 2021/222 Premier catalog that haven't shipped yet.
When I talked to Atlas 2 or 3 Yorks ago they said TMCC will still be offered.
Well, the new F7 announcements were over two years ago, and as you say, they haven't even shipped yet. And those were announced before the MTH Premier aquisition! Atlas O may have said a year and a half ago at York that they will still be offering them, but to date there's been nothing showing up in any catalog (which show products that take over two years to show up), or any further word about it at all. There's been nothing but streams of Premier DCS stuff. There were indications there could be engines available with a choice of DCS or ERR, but that never happened. Atlas O's deal with MTH to acquire their molds may have prohibited that. Who knows?
If Atlas O indeed plans to keep making ERR-equipped engines, it certainly appears to be a low priority. Been disappointing to Legacy operators. Other than the F7s (whenever they get here), the bottom line is that at this point there won't be any new ERR-equipped Atlas O engines available until years from now, if then.