Proxmox VE 9 has been released with significant new features. The update appears to be a major release, following previous versions such as Proxmox VE 8.2, 8.0, 6.2, and 6.0, which introduced various improvements including updates to ZFS and Ceph. The new version may also address specific issues, such as network interface pinning and ZFS ARC memory usage, although details of these changes are not specified.