In a couple of weeks Atlas should be releasing their all-scales catalog for the first half of this year. I'm expecting to see another run of Trainman 70-ton open hoppers, specifically Chessie (B&O) since they did Chessie (C&O and WM) in the last run 2 years ago. I'd also like to see some of the older locomotives that were last done years ago like an SD35.
I don't know if they plan on doing any new rolling stock but I would be up for some 90-ton, 12-panel, 3-bay coal hoppers. I know it's been mentioned about a million times but a GP40-2 would be really nice, or a B30-7 as Master Motive Power.