I can answer about the 2012 Rear Bed because we bought ours new early in the model year.
This particular model Rear Bed was first introduced in 2012 and offered as queen bed (25B) or twin bed (25A) models. For several years before 2012, 25's were only available as Front Bed models.
Doug and Cheryl
2012 FC RB, Michelin 16, ProPride 1400
2016 Ram 1500 Laramie Crew Cab 4X4 Ecodiesel 3.92 axles
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