Kibi is a “Kept in Sync” Fork: we track the latest Kibana deployment and we’re committed to do so in the future, so you get all the good stuff in there, don't worry.

Unlike Kibana however Kibi versions are not “locked in” to a specific Elasticsearch version. In other words Kibi 4.4.1 for example, will work also on later Elasticsearch (at the time of this writing Elasticsearch 2.3.3). So, given a few days after each release, you can expect Kibi to be able to run always on the latest available Elasticsearch.