You can preorder it now at BHphoto (Click here). And this is the list of compatible lenses confirmed by Viltrox:
- Viltrox 135mm F1.8 LAB FE — BHphoto | Amazon | Adorama | Fotokoch | Foto Erhardt | Calumet | WexUK
- Sony 70-200mm F2.8 GM II — BHphoto | Amazon | Adorama | Fotokoch | Foto Erhardt | Calumet | WexUK
- Sony 70-200mm F4 G II — BHphoto | Amazon | Adorama | Fotokoch | Foto Erhardt | Calumet | WexUK
- Sony 70-200mm F2.8 GM — BHphoto | Amazon | Adorama | Fotokoch | Foto Erhardt | Calumet | WexUK
- Sony 100-400mm GM — BHphoto | Amazon | Adorama | Fotokoch | Foto Erhardt | Calumet | WexUK
- Sony 200-600mm G — BHphoto | Amazon | Adorama | Fotokoch | Foto Erhardt | Calumet | WexUK
- Sony 400-800mm — BHphoto | Amazon | Adorama | Fotokoch | Foto Erhardt | Calumet | WexUK | Clifton
- Sony 300mm F2.8 GM — BHphoto | Amazon | Adorama | Fotokoch | Foto Erhardt | Calumet | WexUK | Clifton
- Sony 400mm F2.8 GM — BHphoto | Amazon | Adorama | Fotokoch | Foto Erhardt | Calumet | WexUK
- Sony 600mm F4 GM — BHphoto | Amazon | Adorama | Fotokoch | Foto Erhardt | Calumet | WexUK | Clifton