You can already preorder the new A7cII and A7cR cages at Smallrig (Click here) . There is also a 15% additional discount if you become a member on the website . And also Tilta is teasing the launch of their cage!

Preorders:
Sony A7cII at BHphoto , Amazon US&EU , Adorama , FotoErhardt , Fotokoch , Calumet , WexUK . Sony AUS .
Sony A7cR at BHphoto , Amazon US&EU , Adorama , FotoErhardt , Fotokoch , Calumet , WexUK . Sony AUS .
16-35GMII at BHphoto , Amazon US&EU , Adorama , FotoErhardt , Fotokoch , Calumet , WexUK . Sony AUS .