Photorumors found that screenshot showing the Samsung NX lens roadmap for 2012! Two lenses will be announced within the first 6 months of 2012 and the other three by end of the year.
12-24mm f/4 ED iFn VCM (Voice Coil Motor)
24mm f/1.8 ED SSA iFn
55mm f/1.8 iFn pancake
80-400mm f/4-5.6 OIS SSA iFn
135mm f/2.0 OIS SSA iFn
Sounds Like a very intriguing roadmap. The 24mm and 55mm lenses are definitely on top of my wish-list!