I just upgraded my ES cluster from 6.2.2 to 6.6.2 and found these new features in Kibana. I recalled that some of these used to be in X-Pack which is not free. I’ve double-checked and made sure that I don’t have X-Pack installed. I read that you have made some of these into the free tier in 6.3… so what I want to make sure right now is if these are free or paid — I would hate to accidentally started a free trial by enabling them and then lose my index when I downgrade.
They are all free, yes!
That won't happen, we will never delete your data due to a change in license level 
Thanks! That’s good to know!
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