I am keeping my fingers crossed that the lounge chair of the future will look something like the Jenagh Chair. Amir Masoud Faridizad is the designer of the Jenagh Chair, which means "sternum" chair in Farsi.
The chair doesn't really resemble a sternum, but it does look damn comfy. The chair is designed to be used with what appear to be large bean bags. The bean bags fill in the hollow frame of the chair. Different amounts and sizes of bags can be used to shape the chair to your liking.
If design is any indication (it is) then modular furniture is the way of the future. Chairs that can easily switch their shape like the Jenagh Chair are on the verge of becoming the norm as opposed to the exception.