Upgrading from v57a

I installed MIAB on Ubuntu 18.04.6 LTS in June using Linode.

Now I see:

“A new version of Mail-in-a-Box is available. You are running version v57a. The latest version is v60.1. For upgrade instructions, see https://mailinabox.email.”

I am assuming I need to create a new MIAB on Ubuntu 22, backup my old MIAB and move it too new one?

Are there any security updates lacking in v57a that I need to update immediately or can I wait a while on this?

AFAIK there is nothing critical in MiaB itself. But be aware that standard support for Ubuntu 18.04 ends in April 2023. From this point on, you will no longer receive updates unless you register for Extended Security Maintenance (ESM) / Ubuntu Pro.

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