Sony released new firmware updates version 3.20 for Sony a7, a7R, a7S and a6000 mirrorless cameras to add support for the new Sony FE 70-200mm f/2.8 GM OSS lens. You can follow the links below to download the firmware updates (Select an Operating System to download files):
This utility updates the camera firmware to version 3.20 and provides the following benefits:
Improvements over version 3.10:
• Provides optimized performance for new lenses (SEL70200GM)
The new Sony FE 70-200mm f/2.8 GM OSS Lens is now available for pre-order at Amazon, B&H, Adorama and it will be released on July 29, 2016. And all new Sony FE lenses and wireless products are now listed on one single page at B&H.
The Sony FE 50mm f/1.4 ZA, 70-200mm f/2.8 GM and the Teleconverters will be released on July 29. Below are store links in US: