Ships on May 1 in Europe and May 5 in USA. Costs 1499 Euro/Dollar
Diglloyd posted a full review of the lens (for subscribers only). And his conclusion is:
The Zeiss Batis 18mm f/2.8 Distagon is the finest 18mm lens ever to be produced for full frame cameras.
Brian Matiash posted an introduction with image samples:
All in all, I was exceptionally impressed with the performance of this lens and the image quality it produced.