The new Sigma 60mm f/2.8 DN Art lens should be available later this month for $239. It will be available in both NEX mount and Micro Four Thirds mount.
The new lens was announced along with the 19mm f/2.8 DN and 30mm f/2.8 DN lenses back at CES 2013. The wider lenses carry a slightly lower price tag at $199 and have been shipping for a few weeks now.
The 60mm offers an equivalent focal length of 120mm on Micro Four Thirds cameras and 90mm on Sony NEX cameras. Minimum focus distance is at 19.7-inches and it contains Special Low Dispersion (SLD) glass to reduce chromatic aberration.