Zeiss don't make AF lens except for Sony.
Next fall will come 3 lens for E and X mount.
ZA lens has unique design.
For example ZA 1.4/85 differs from other known Planars (C|Y, Cpntax N, ZE|ZF) - it has different optiocal formula.
Same with Distagon 2/24 and 2/25. Completely different optics and a little better performance of ZA lens (for 85s much bigger difference in IQ between ZA and ZE|ZF, actually based on old 70s design on C|Y version).