Two pressure heads moved via robotic hands shape the model from two sides.
Update:
The technology is not new, probably only the implementation and new machinery is developed.
http://en.wikipedia.org/wiki/Incremental_sheet_forming
Rapid Prototyping of Sheet Metal Components with Incremental Sheet Forming Technology, thesis by Meelis Pohlakhttp://out.uclv.edu.cu/fim/alexis/Incremental.Sheet.Forming.pdf