Regarding:
"""
> Mastodon will begin displaying quote posts from other servers and software
Anyone knows what it really means?
"""
Currently from the Mastodon Web-based user-interface (UI) you can see quote posts from other Fediverse servers.
For example, see here for what a Mastodon user sees for a bridged Bluesky post:
https://mastodon.social/@reiver/114632378858369015
But, users of the Mastodon Web-based user-interface (UI) cannot create a "native" quote-post themselves yet.
