Boeing had an option to put sleeping berths in the upper deck (aft of the hump) on the 747-8 (basically involved moving around some ECS and other equipment to open up the necessary area). The idea was the passenger would have a 'normal' business/first class seat on the upper deck, then could move to their sleeping berth as they wished during cruise (not to be occupied during TO/Landing). Unlike the Airbus proposal it wouldn't have taken away any currently usable space (although obviously extra cost/weight).
None of the commercial operators wanted it, although did end up on at least one VIP 747-8.
Given freight is often more profitable than SLF, I don't see this going anywhere either.