jtad,
You may have read one of my posts on iRV2 in their Mods to RV's forum. I have a 07 Revolution that I have made significant changes to including an articulating bed. The back raises and moves toward the wall to allow an additional 15" of additional walking space at the foot of the bed. It does not flex at the knee area like the Temperpedic. The design was specific to my Revolution and probably won't fit any other coach without modification. Winnebago featured a similar design (which is where I got the idea) but Lippert would not return my emails and neither would the vendors listed on their website as I wanted to do the installation myself.
If you send me a PM with your email I can give you some more info.
Dave