OpenID connect in couchbase lite 2.0

When will it be available?

I don’t know that we have plans to add full support as in 1.x; it was a lot of work, and AFAIK few if any customers used it.

You can support it on your own by writing your own code to authenticate to Sync Gateway and the ID provider, and then take the resulting SG session cookie and tell the CBL replicator to use it.