Isn't anyone jazzed about this? Everyone is talking about the 135mm just announced. The 50mm has been the middle-child to the 35mm & 85mm. The 50mm is a perfect focal length for me for many reasons, but There is a visual difference. Maybe the new 55mm will surpass it's two brothers...
http://www.dpreview.com/news/2012/09/07/Carl-Zeiss-preparing-Distagon-55mm-F1-4-for-Canon-Nikon-lenses-for-mirrorless-system-cameras
http://www.dpreview.com/news/2012/09/07/Carl-Zeiss-preparing-Distagon-55mm-F1-4-for-Canon-Nikon-lenses-for-mirrorless-system-cameras