Ah, yes - we are pulling from the tag on GH. However, I believe the hard dependency on the older version of gun was fixed recently. IIRC, that was what prevented a proper package at the latest version from being on hex.
I was able to update to the latest tag of emqtt on GH (1.14.4), which was not previously possible. I don't believe there are any blockers now to a package on hex.pm, so hopefully this is made available soon.
