There is a new firmware update for the A6000/A7 series in Japan.

There seems to be a firmware update in Japan which is not available in any other country.

Version 1.21 for the A6000: http://www.sony.jp/ichigan/update/ILCE-7_7R_7S_7M2_6000_win.html. European and US Sony stores only have version 1.20 yet.
Version 1.21 for the A7II: http://www.sony.jp/ichigan/update/ILCE-7_7R_7S_7M2_6000_win.html. European and US Sony stores only have version 1.20 yet.

Our reader Nippa from SonyAlphaForum tested the new firmware and says:

Apparently improves low light focusing in some instances. Can’t say that I see any difference but the update using Win7 went smoothly.

Our reader David says:

I updated my A7r recently to 1.21 from 1.20 and noticed much better low light AF with the 28/2. Haven’t checked other lenses yet. It’s been available in Japan for about five days. Weird that it’s not on other Sony sites yet

And Flavio said:

On the website says the 1.21 replaces 1.20 because was found a bug on the 1.20 where the camera don’t start.

I have no info yet if that’s a mistake on Sony side or if the firmware will be released within days for all other countries too.