Download: av.jpn.support.panasonic.com/support/global/cs/dsc/download/index.html
This is the fix:
When a RAW image shot in High Resolution mode was developed using RAW development software, there were cases where false color occurred in the developed image. This issue has been resolved.
Preorders: GH6 at BHphoto, Amazon, Adorama. In EU at Fotokoch DE, Calumet DE, Foto Erhardt DE. WexUK, Park UK.