Advisory: Sophos Endpoint - "Your connection isn't private." We're aware of a certificate issue and are actively working to resolve it. Please see: KB-000045954 for the latest updates.
Release Post: Sophos Firewall v20 Early Access Announcement
Full Feature List: https://assets.sophos.com/X24WTUEQ/at/w8vnx57qw4vhs997fbknp2j/sophos-firewall-key-new-features.pdf
Can the GA release be updated to the MR release when it becomes available?
GA is available & yes it can be updated