so the timeline seems to be shrinking between releases in different scale

Features: EGACY® Control System – equipped – able to run in LEGACY® Control mode

Model Number: 170634

Model Number: 625015

Trainz Product Id: 11573806

MRC 1930 HO Drop-In Sound & Control DCC Decoder - Preferred Sound Fits Kato ProductID_12294011 so the timeline seems toThis is an MRC 1930 HO Scale Drop In Sound & Control DCC Decoder Preferred Sound Fits Kato SD45, SD70, SD80, RS2, C44 9W, GP35, GP38 2, F40PH, P42. Condition: Factory New (C 9) Operational Status: Functional Original Box: Yes (P 9) Manufacturer: MRC Model Number: 1930 MSRP: $82. 98 Scale Era: HO Scale Model Type: Control & Electrical The Trainz SKU for this item is P11997261. Trainz Product Id: 11997261