Proxmox 9 was released, based on Debian 13 (Trixie), with some interesting new features.
Here are the highlights: https://pve.proxmox.com/wiki/Roadmap#Proxmox_VE_9.0
Upgrade from 8 to 9 readme: https://pve.proxmox.com/wiki/Upgrade_from_8_to_9
Known issues & breaking changes: https://pve.proxmox.com/wiki/Roadmap#9.0-known-issues
You could just start over if you dont have much invested into your current setup.
I’m in too deep. I’m trying this script. Fingers crossed
Depending on the services, you should be able to make a backup and restore without needing to delete the real version until you’re sure everything is working