The new Sony 70-200mm GM FE lens isn’t Stock in USA nor in and Europe. Amazon US (Click here) just added a note on the lens page:
Because of high demand, we anticipate being unable to fulfill all customer orders with our first allocation. Product supply from Sony is very limited. Your place in line will be maintained and your credit card will not be charged until the product is shipped.
I got word from store owners that Sony will ship them a new Stock starting from mid-late September.
Check the 70-200mm GM in Stock status at BHphoto, Amazon, Adorama, Focuscamera. Calumet.de. Amazon Germany. Cyberport.de. PhotoPorst. Jessops. WexUK.
There is also a new 70-200mm GM lens test by Jason Vong: