A new wiki page on how to backup your Whonix VMs has been written.
Page appears empty.
When new whonix arrives, how can I backup and restore my settings, bookmarks etc. Is this script for that?
No script.
Fixed that link.
https://www.whonix.org/wiki/Backup_Whonix_VMs
You upgrade using apt-get.
Alternatively File Transfer - Whonix plus manually.