To answer your other question, we don’t have an release date for 2.2, but that release date isn’t actually relevant as we release features to our customers (and those who self host) as we develop them. There’s no need to wait for the major version release.
To know when we’ve added it, keep an eye on the #releases category. You may also want to watch the #release-notes tag, so you’ll be emailed for each new minor release. FA 5 has been a frequent request, so I’m sure it’ll be called out in the release notes when it’s added.