KFX does not automatically contain DRM, at least in the sense that books are bound to a user account or device. I would like to remind everyone that the following has been definitively proven:
A DRM-free (indie/TOR/etc.) book that has been downloaded as KFX can be read on any other Kindle which supports KFX, whether it is logged in or not.
It appears to be true that the format itself is obfuscated (a type of DRM), but seemingly in a uniform way across all KFX books. As such, I would think of that more as a file format than a DRM.
There is a fair chance that the DRM is not changed at all, we have no idea since no one has yet reverse-engineered KFX. (Nor have they done so for AZW6, which most people still don't realize exists...)
As HarryT said, wait a bit, and give it time. People are undoubtedly poking sticks at KFX as we speak, but these things take time. (Also consider, some people who would try to reverse-engineer the KFX format won't bother since they don't have a device capable of it.)
In the meantime, downoading via the browser is guaranteed to deliver a traditional MOBI/AZW3 which can be DeDRMed and/or converted.