It is just a proposal by the authors, and not an IETF working group (WG) draft. This can be identified by the name as draft-authorname-* and not draft-ietf-*. Anyone can write an author draft and AFAICS this is not even aimed at a specific working group (it should have been sent to [DNSEXT] and does not appear there or any other DNS-related WG.)

[DNSEXT]: http://datatracker.ietf.org/wg/dnsext/