Waterfox Sync?

So right here,
https://www.waterfoxproject.org/en-US/waterfox/features/sync/
It says, "Browse uninterrupted with Waterfox Sync".
I went to the sync tab in pref and it says it's firefox sync and I need to make a firefox account?
I have version 56.2.5-1 on Arch Linux.
Has this not been rolled out?

Extra question. If there is waterfox sync, will it also sync about:config?

Thanks