Oh my... just had all of my WP Rocket customers sites go offline as their latest version PHP fatals with WordPress 7.1. I've manually patched their plugin and all Anchor Hosting customers are back online: anchorhost.statuspage.io/inc…
It looks like the next step for real-time collaboration in WordPress is underway.
There's a new experimental feature plugin called "Presence API".
You'll be able to see what other people are doing in your WordPress site: github.com/WordPress/presenc…