Currently the /latest point to PuppetDB 1.6 docs but PuppetDB hasn't been released yet. I understand that /latest is being interpreted as bleeding edge but when you do a search on Google for puppetdb docs the first hit is /latest.
This is causing people confusion:
20:15:03 Phibs | or I guess 1.6 isn't 'released' yet
20:15:23 Phibs | even though latest official release points @ 1.6 on the docs