The little information available about the NX100 is about a NX EX1-style camera and it would come with 2 of the announced NX lenses, the compact 20-50mm f/3.5-5.6 (the NX100 kit lens) and the pancake 20mm f/2.8.
I just hope the 20mm pancake be a f/2 instead f/2.8.