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.
Proxy protocol internal implementation changed. The changes are purely internal, no changes in the behavior are expected.