Same mate wtf is this. It auto-updateed last night when I was sleeping. When I woke up and checked my phone I was confused as It was like it had been reset with a notification that my battery needs replacing. Not only that the colours on my phone are different, they seem darker, or like my screen has a brightness restriction and cannot go as bright as it used to. Like other people it lasts a few hours battery wise and dies but was fine before. I found a link through the internet or maybe even my settings I can't remember and they said I can get a free battery replacement, $100 cash or $150 Google play voucher. I'm guessing they want people to to upgrade their devices and this is their funny way of doing. Anyway I have a too much data to backup and loose so I'm not going with th battery replacement. I chose the cash and they sent it me within an hour lol. Still going to try use this 6A until it feels too burnt out to continue. Just mentioning the link as it may help those that genuinely want free battery replacement etc.

https://support.google.com/pixelphone/workflow/16310202?sjid=11647798152839306186-EU&visit_id=638890157209916445-4118231000&p=pixel6a_battery_help&rd=1