The New QX cameras are already available for preorder at Amazon US (Click here to see them)! Here are all direct links to the two different cameras and colors and accessories:
Black QX100 (Click here).
Soft Carrying Case for DSC-QX100 (Click here).
Black QX10 (Click here).
White QX10 (Click here).
Soft Carrying Case for DSC-QX10 (Click here).
As you can see the QX cameras will ship on September 27!
UPDATE: More new Sony stuff for preorder:
Sony AX1 4K camcorder (Click here).
The AS30V action camera (Click here).