Gutenberg development is progressing quickly and it’s almost certain that new block editor will be included in WordPress core in several months.
We at htmlBurger are excited about this change. We’re committed to maintaining Carbon Fields and making sure that it will play nicely with Gutenberg.
In order to achieve that we’re working on 2 fronts.
First, we’ll make sure that custom fields containers work flawlessly within the “Post Meta” boxes below the Gutenberg editor.
Update 2018-12-13: Carbon Fields v3 currently has release candidate. Please see the announcement here.