Source from CR, Carl Zeiss is going to release several new prime lenses in 2013.
These rumored Zeiss lenses would be: Zeiss 28mm f/1.4 and Zeiss 85mm f/1.4 II (a new update for the current 85mm f/1.4).
These 28mm f/1.4 and 85mm f/1.4 II will come together with the new released Zeiss 55mm f/1.4, as the new high-end prime line.
via: CR