In case you need to get it now: The Sony A1 is in Stock right now at BuyDig (Click here).
Sony A1 preorders:
Sony A1 at BHphoto. Adorama. Amazon. Focuscamera.
Sony A1 in Europe at FotoErhardt DE. Calumet DE. Fotokoch DE. Park UK. WexUK.
Join the Sony A1 Facebook group here.
Sony 50mm f/1.2 GM preorders:
Sony 50mm f/1.2 GM at BHphoto. Amazon. Adorama. FocusCamera.
In Europe at Fotokoch Germany. Calumet Germany, Foto Erhardt. ParkCameras UK. Jessops.