Like I say, I'm withholding judgement for a while, and will give Zeiss the benefit of the doubt.
But people who think that heavy pincushion distortion in a $1200 85mm f1.8 lens is a non-issue are, IMO, making an unwarranted leap of faith. This is not a focal length that's super hard to correct. Even relatively inexpensive 85's from Nikon and Canon and Sony have practically no distortion. And some of them are lightweight and sharp, too.
If you only shoot low depth of field portraits, and never do landscape work with this lens, or don't care about the distortion in your photographs, I guess you're good to go. For what I do, I need straight lines and sharpness everywhere, including the corners. Both. This is absolutely not too much to ask for an 85mm lens.
If it turns out I can get what I need using software correction, I may pony up for the Batis after all. It's smaller and lighter than the 90mm macro. But I need to be convinced. I'm not giving Zeiss a free pass on this one.
And frankly, I'm surprised that they are featuring a distortion curve based on in-camera correction in some of their publicity materials. Did they adjust for in-camera correction when they calculated their MTF charts?