I just received an Atlas catalog in the mail yesterday, and it stages various announcements from January through June even though they're all catalog'd already in the January publishing. So that's an interesting twist, for sure. As the OP indicated, lots of diesel locomotives are on their way.
But I'm not so sure I get the "more diesels" strategy. 
Yes, it's understandable from a point of view that obviously there's a supplier overseas that seems to be pumping out diesel locomotives like crazy. After all, for most of 2013 that's all Lionel delivered. 
Diesel locomotives... one after another... and in multiple road-numbers and powered/dummy as well.
But given this glut of diesel locomotives already present in the market, why is Atlas-O choosing to deliver a bunch more? And while they'll likely step up the TMCC operation with ERR cruise-control, these locomotives still will NOT have full Legacy electronics due to Lionel licensing limitations. For example... what about the sensor to communicate a locomotive's whereabouts on the layout? Will they have that? Probably not. 
Tough market in which to play, no doubt. That's why I was surprised to see "so many" diesel announcements for 2014. And the TBA pricing leaves me absolutely puzzled. What's THAT all about???
David
My guess is the monies were already invested in highly detailed tooling for the Dash8-40C engines and it was easier to just move this over to the "Master" series camp.....if not they might have to raise the bar considerably on all future Trainman releases and this strategy would then compete directly with their Master line.... It seems our manufacturers are offering too many levels of their products....a costly strategy involving too many SKU's of a common thread and we all know who is paying for it from the advertising on down.....I have lost count of the multiple levels of details and operational complexities now offered by all the manufacturers ....Does anyone have a quick refernce chart?
