The Pickuptruck.com web site just posted an article speculating that the 2009 standard Dodge Ram 1500 pickup will use coil springs front and rear. The 2500 and 3500 pickups will continue to use leaf springs. The article appears here:
Photos of a prototype Ram with rear coils have appeared on several web sites. Coil springs have better ride characteristics, but are rarely seen on pickup trucks. Maybe Dodge is acknowledging that the standard 1500 pickup with crew cab is purchased mostly for family transportation, not as a work truck.
It's unknown at this point if the Power Wagon model, which is based on the Ram 1500, will switch to coil springs. It's more likely that the Power Wagon label will be applied to a Ram 2500 instead. As a result, the Power Wagon would gain a little carrying capacity.