This is a changelog topic for proxy protocol.
Proxy protocol update is planned for tomorrow 2020-11-17, 12:00 UTC - protocol will be switched to a new parsing engine. This is an internal process, no changes in protocol work are expected.
Update postponed till Friday 2020-11-20, 12:00 UTC
Proxy protocol is updated: now Mandatory Target and Proxy Replies Back target's options are set to true by default.