A Sony A7II Firmware Update has been scheduled for November 18 2015
The update will add the option to save Uncompressed Raw Files, along with support for Phase-Detect AF with Adapted Lenses. There will also be some additions to the Custom Menu Settings.
No further information is available at this time.
On November 18 go to http://esupport.sony.com and look for the A7II page.
Firmware upgrade using: Mac OSX
Firmware upgrade using: Windows 10
For useful advice about updating your camera’s firmware go to sony-alpha-firmware-updates