Eagle Creek showed a few bags at the recent Outdoor Retailer conference which will release in Fall 2014.
http://www.snewsnet.com/press-releas...for-fall-2014/

I'm honestly not quite sure about these. The wheel-less load hauler looked the most interesting until I saw that at 10" in depth prior to expansion. I'd likely put too much in it and it would have to be wedged into sizer frames. It also seems that by choosing to make it 10" deep instead of 2" wider would throw off center of balance a bit more in backpack or briefcase mode. I own the current 22" Load Warrior and do like it, though since I purchased it for the relatively light weight, I'm not sure I'd evaluate the Tandem Warrior as favorably due to the additional 1 lb 8 oz for a zip off duffel.