2022-11-05 UTC
# 
@RaphaelWimmer ↩️ FWIW, there are W3C specs for protocol and data format. While the ActivityPub protocol does not appear to support any versioning, the ActivityStreams JSON format is extensible.
What this means in practice remains to be seen, oc.
https://www.w3.org/TR/activitystreams-core, https://www.w3.org/TR/activitypub/ (twitter.com/_/status/1588868151173091328)