They should rather concentrate on building a full coherent lens line before starting yet another series of lenses.. Let me see what we have now :
The Sony lenses : 28mm F2, 24-240mm F3.5-6.3, 28-70mm F3.5-5.6,
The Sony G lenses : 90mm F2.8 macro, 28-135mm PZ F4, 70-200mm F4
The Sony Zeiss lenses : 35mm F1.4, 35mm F2.8, 55mm F1.8, 16-35mm F4, 24-70mm F4
The Zeiss Loxia : 18mm (announced), 21mm, 35mm, 50mm
The Zeiss Batis : 25mm, 85mm
I would like a coherent lens line to built a three- four set of primes around the 55mm F1.8, something very sharp, with low distortion not necessarily fast, but light and compact including a 24mm F2.8 and a 135mm F2.8. Sony needs to add that to their Sony Zeiss series instead of starting that new master line.
The Zeiss are impossible to get here. I went in a well renowned brick and mortar shop last week, they didn't even have a demo model to show and worse didn't even have an estimate date of possible delivery. None if the online dealer is able to indicate a delivery date either.
So now before we get a 135mm tele, before those Batis lenses becomes available they are launching yet another line of fast and thus probably heavy lenses that aren't so well suited to these light bodies.