IPv6 becomes a full Internet Standard
The Internet Engineering Task Force (IETF) has published RFC 8200, making the Internet Protocol version 6 (IPv6) a full Internet Standard. As explained on the Internet Society’s website, although IPv6 was already defined in RFC 2460 (updated by several other RFCs), this was a draft standard. What IETF did with RFC 8200 was to combine these many RFCs defining the IPv6 specification, into a single RFC, together with an Errata. So, technically speaking, there are no changes in the IPv6 specifications themselves, but IPv6 is now a full Internet Standard, defined in a single RFC.