The storm chasers will like that they are "weather sealed", and that old 50/1.4 needed to be replaced.
That new 50/1.4 could be very nice...
The 21, 35, and 50 macro are pretty good as they are.
My disappointment is that the 100 macro is apparently left untouched, which means that thousands of new Zeiss customers will learn all about axial chromatic aberration.