Preorders:
Sony 16-35mm at BHphoto. Adorama. Amazon. Calumet DE. FocusCamera. Fotokoch DE. WexUK. Calumet NL.
Here comes the big youtube video review roundup:
https://www.youtube.com/watch?v=kWWLJNHV2WE
German:
https://www.youtube.com/watch?v=MJHaRxSjyzQ
Italian: