I guess you all know that Zeiss released their first “Touit” lenses for the Fuji X and Sony NEX systems. In a Zeiss FAQ posted by ePhotozine they stated that “Lenses for the Micro 4/3 mount are technically possible, but nothing is planned yet.”
Zeiss also explains why there is not MFT mount version of their current Touit lenses: “In order to reach the best compromise between lens size, weight and imaging performance for smaller sensors, e.g. the Micro 4/3, other optical and mechanical designs are sometimes more suitable than for APS-C”
Let’s hope they will make MFt lenses!