Well this sucks, response from DXO:
Natalie (Support & Assistance)
Jun 29, 2026, 3:57 PM GMT+2
Hello,
Thank you for contacting DxO Support.
At this time, support for the Sony A7R VI is available starting with DxO PhotoLab 9.9.1 and DxO PureRAW 6.3.1.
Please note that the initial support does not include RAW Compress HQ and RAW Compress files.
Regarding DxO PureRAW 5, we are unable to guarantee if support for the Sony A7R VI will be added, and we do not have a timeline to share for any potential compatibility update.
Likewise, we cannot confirm at this stage when or if full support for all Sony A7R VI RAW formats, including RAW Compress HQ and RAW Compress, will be included in future updates.
We understand this may not be the answer you were hoping for, but we appreciate your patience and understanding.
Kind regards,
Natalie - DxO Labs Support Team